November 1998	TECHNICAL ISSUES & SOLUTIONS

This Issue...

Adobe Systems releases Adobe Photoshop 5.0.2 for the Macintosh and Windows
Adobe Color Management Assistant
Other changes in Photoshop 5.0.2

Known Issues Running Adobe software products on Macintosh OS 8.5

1. Adobe PSPrinter 8.3.1—Unexpected printed results or errors when running on Mac OS 8.5

2. Photoshop 5.0—Unexpected display problems when running on Mac OS 8.5
3. Acrobat Exchange 3.0x—Unable to start up under Mac OS 8.5 with Capture plug-ins installed
4. ATM 4.0x—Text display issues when running under Mac OS 8.5
5. Adobe Type Reunion Deluxe 2.0x—Grayed out fonts in QuarkXPress ® Font menu when running Mac OS 8.5

Correctly printing PageMaker 6.5x publications with placed OPI proxy files
Reading and preserving embedded profiles when placing tagged Photoshop 5.0x files
Working with Black Point Compensation in Photoshop 5.0x

Adobe Systems releases Adobe Photoshop 5.0.2 for the Macintosh and Windows

Adobe Systems is releasing Adobe Photoshop 5.0.2 for the Macintosh and Windows, a maintenance update to Photoshop 5.0. In addition, the Photoshop 5.0.2 update is available for registered customers to down-load from the Adobe Web site and the Adobe FTP site at these URLs:

Macintosh
http://www.adobe.com/supportservice/custsupport/LIBRARY/5302.htm
ftp://ftp.adobe.com/pub/adobe/photoshop/mac/5.x/updaters

Windows
http://www.adobe.com/supportservice/custsupport/LIBRARY/52fe.htm
ftp://ftp.adobe.com/pub/adobe/photoshop/win/5.x/updaters

The name of the Macintosh update file is [ps502up.sit.hqx]. The name of the Windows update file is [ps502up.zip]. This special edition of ReadMe Now summarizes what’s in Photoshop 5.0.2. You can find a complete list of these changes in the ReadMe file that’s installed with the update.

Over the last few months, we’ve received reports that the new color management interface in Photoshop 5.0 is challenging to customize. We’re introducing a Color Management Assistant in Photoshop 5.0.2 to help simplify the process. This assistant automatically launches the first time you start Photoshop 5.0.2. If you’ve already customized the Color Settings options in version 5.0, you don’t have to use the assistant. Simply click the Cancel button and start to work in Photoshop 5.0.2.

Note: If you’ve customized your color settings and want to use the assistant to make other changes, save your current settings first (locate and rename the Photoshop 5.0 Color Settings file). Then you can revert to these settings at any time, if necessary.

The Color Management Assistant steps you through selecting settings. Here’s an overview of how this works. Selecting a base configuration—The Assistant first asks you to select a preset or customizable configuration, depending on your workflow. We recommend selecting Customize For Prepress And Other Uses. This option works best for high-end color reproduction, providing step-by-step instructions on how to configure the various color management options in Photoshop 5.0.2. (If you want information about the other options, select each one to see a description of it.)

Selecting an RGB working color-space—The Assistant asks you to select a device-independent RGB working color space. If you’re using a profile in Photoshop 5.0 that is not listed here, you can select it in Photoshop 5.0.2 by choosing File > Color Settings > RGB Setup.

Note: Adobe RGB (1998) is equivalent to SMPTE-240M in version 5.0. Photoshop 5.0.2 recognizes Photoshop 5.0 files tagged as SMPTE-240M and maps them correctly to Adobe RGB (1998).

Selecting an option for RGB profile mismatch—Then the Assistant asks you to choose how Photoshop 5.0.2 should open RGB images tagged with profiles that differ from your RGB working color space. The default option is Ask Me What To Do... as shown below.

Note: The selection you make here does not affect the Profile Mismatch selections you make for CMYK or Grayscale images.

Selecting an option for RGB untagged images—Finally, the Assistant asks you to choose how Photoshop 5.0.2 should open untagged RGB images. (For more information about opening untagged RGB and CMYK images, see the August 28th issue of ReadMe Now.)

Note: The selection you make here does not affect the Assumed Profiles selection you make for CMYK or Grayscale images.

Changes to the default color-management preferences

Adobe Photoshop 5.0.2 now defaults to None for all assumed profile handling and defaults to "Ask When Opening" for mismatched profile handling. If you’ve customized these settings in version 5.0, then Photoshop 5.0.2 maintains the choices you’ve made.

Opening Adobe Illustrator ® 8.0 native files

Photoshop 5.0.2 opens native Illustrator 8.0 files, including gradient mesh objects. You can also drag and drop or copy and paste Illustrator 8.0 artwork into Photoshop 5.0.2.

Color separating multi-toned EPS files on PostScript 3 ™ devices

Photoshop 5.0.2 properly creates and saves multi-toned EPS files for printing color separations to PostScript 3 printing devices. In Photoshop 5.0, if you exported a multi-toned EPS file placed it in a page layout application for printing, the EPS file would generate a PostScript ® printing error or print as a composite image on each color plate.

Printing under Windows NT 4.0

Photoshop 5.0.2 now allows you to access all the Color Settings dialog boxes and to print when logged in as a User and not an Administrator. (This problem was described in detail in the June 26th issue of ReadMe Now.)

Adjustments to the type tool and kerning/ tracking features

We’ve made adjustments to the kerning and tracking features to improve the results you get on-screen and in print. Now when you enter new text in Photoshop 5.0.2, you’ll get better, more consistent letter spacing. In addition, we’ve adjusted the anti-aliasing algorithm to make type more readable at small sizes. (We covered this problem in the July 31st issue of ReadMe Now.)

Fix for sticky cursor problem ( Windows)

If you’ve experienced the sticky cursor problem associated with certain video cards, you can now fix it. Just open the Photos50.ini file and add a line that says: STICKYCURSORS=1

Apple Computer recently released version 8.5 of the Macintosh operating system. While in general Adobe software is running well on this new Mac OS, we’ve uncovered a few issues. This article sums up the known issues to date and their workarounds for these Adobe products:

• Adobe PSPrinter ™ 8.3.1
• Adobe Photoshop 5.0x
• Acrobat ® Exchange ® 3.0x
• Adobe Type Manager ® (ATM ® ) 4.0x
• Adobe Type Reunion ® Deluxe 2.0x

Issue
We’ve heard about several printing problems from customers who have recently updated to Mac OS 8.5 and who have the Adobe PSPrinter 8.3.1 printer driver installed in their Extensions folder. These printing problems seem to occur even if the PSPrinter driver is not selected in the Chooser. Here are some examples of the problem:

• Pages printing blank
• Undefined PostScript ® errors
• System errors when distilling PostScript files
• System freezes

Solution

1. Remove Adobe PSPrinter 8.3.1 from the Extensions folder in the System folder.

2. Install the AdobePS 8.5.1 driver from the Adobe Web site:

http://www.adobe.com/supportservice/custsupport/LIBRARY/4cea.htm

Or

Install the Apple Laserwriter 8.6 printer driver from the Mac OS 8.5 CD-ROM.

Additional information
The Adobe PSPrinter 8.3.1 printer driver is incompatible with Mac OS 8.5. The AdobePS 8.5.1 and Apple Laserwriter 8.6 printer drivers work as expected.

Photoshop 5.0—Unexpected display problems when running on Mac OS 8.5

Issue
Background colors and color swatches don’t display as expected in Adobe Photoshop 5.0 when running on Mac OS 8.5. Instead, you’ll encounter these problems:

• When you mouse over menu items, the back-ground color changes (for example, white items turn gray, and a gray bar appears). When you re-lease the mouse and choose the command again, the background returns to its original color.
• When you select colors from color swatch popup menus in various dialog boxes, such as the Selec-tive Color dialog box, those swatches appear as tool icons. When you release the mouse, the color swatches reappear. This problem does not occur with Photoshop 5.0.2.

Solution
Upgrade to Photoshop 5.0.2. The Photoshop 5.0.2 up-date is available for registered customers to download at no charge from the Adobe Web site:

Macintosh version
http://www.adobe.com/supportservice/custsupport/LIBRARY/5302.htm

Windows version
http://www.adobe.com/supportservice/custsupport/LIBRARY/52fe.htm

Additional information
Mac OS 8.5 includes changes to the way screen redraw and certain user interface activities, such as selecting items from popup menus, are handled. These changes affect Photoshop 5.0; however, we were able to modify Photoshop 5.0.2 to be compatible with these changes.

Issue
Adobe Acrobat Exchange can’t run under Mac OS 8.5 when the Acrobat Capture plug-ins (ScanPI, ImportPI, and OCR) are installed in the Acrobat 3.0 Plug-Ins folder. Instead, Acrobat Exchange or the Mac OS may freeze, or you may receive an "unmapped memory" error.

Solution
Remove the ScanPI, ImportPI, and OCR plug-ins, and then restart Acrobat Exchange 3.0x.

Note: After removing these plug-ins, the following commands will be grayed out in Acrobat Exchange:

• File > Scan > Image
• File > Import > Image
• Document > Capture Pages

Without these commands, you will not be able to capture pages directly into a PDF file. You will still be able to import Notes and Form data.

Additional information
If you’ve already installed Mac OS 8.5 and you want to install Acrobat Exchange, do not use the default Easy In-stall option. (This install option automatically installs the Capture plug-ins.) Instead, select the Custom Install option, and then select the following install options: Acrobat Exchange, Acrobat Catalog ® , and Acrobat Distiller ® .

Issue
When you view, enter, or edit text in various applications with ATM running, the text may not appear on-screen, or may appear with unexpected characters. This prob-lem occurs when one or more of the following options are set in the ATM Deluxe 4.0x control panel:

• Preserve Character Shapes is selected.
• Smooth Font Edges is deselected.
• Disable Smoothing at Screen Font Point Sizes is selected.

Solutions
Change the problem preference settings and restart ATM Deluxe 4.0x:

1. Start ATM Deluxe 4.0x.
2. Press Command+K and then select the General popup menu.
3. Set the following options:
   — Select the Preserve Line Spacing option.
   — Select the Smooth Font Edges option.
   — Deselect the Disable Smoothing at Screen Font Point Sizes option.
4. Close ATM Deluxe 4.0 and restart your Macintosh.

Additional information
When you select Preserve Line Spacing, the line lengths of text display and print as accurately as possible. When Smooth Font Edges on Screen is selected, ATM smoothes the edges of Type 1 fonts on-screen by anti-aliasing them. Anti-aliasing fades the edges into the background color to make them appear smooth and blend them into the background.

Adobe Type Reunion Deluxe 2.0x—Grayed out fonts in QuarkXPress ® Font menu when running Mac OS 8.5

Issue
In earlier versions of the Mac OS, you can activate, auto-activate, or deactivate a font in ATM Deluxe 4.0x and have Adobe Type Reunion (ATR) immediately display the results in running applications. Under Mac OS 8.5, however, making similar changes may not produce immediate results in certain applications, such as QuarkXPress 3.3x or later.

Solutions
Add QuarkXPress (or other affected applications) to the Adobe Type Reunion Compatibility tab:

1. Choose Control Panels > Adobe Type Reunion Deluxe from the Apple menu.
2. Click the Compatibility tab, and then click the Add Application icon (the hand and paper icon).
3. In the Add Application dialog box, select QuarkXPress, and then click Open.
4. Quit ATR Deluxe and start QuarkXPress.

Or

Quit QuarkXPress and activate or deactivate the necessary fonts through ATM Deluxe. Then restart QuarkXPress.

Additional information
Some applications are not compatible with ATR, or not compatible with it running under the new Mac OS. You can prevent font display problems by adding these applications to the compatibility tab in ATR to disable the interaction. (ATR contains a list of known incompatible applications, which are automatically disabled.) Then ATM can handle all aspects of font activation or deactivation for those applications directly.

EPS Import filter dialog box

Issue
You may find that OPI proxy or FPO (for position only) images do not print when you output composite proofs or color separations of PageMaker 6.5x documents. The problem only happens with OPI proxy files saved as EPS files. If you’ve saved proxy files in TIFF format, they will print correctly.

Furthermore, other placed graphics and text will print as expected.

The problem occurs when you or your customers place the EPS proxy files into PageMaker with the Read Embedded OPI Image Links option selected in the EPS Import filter dialog box. (This option is selected by default.) With this option selected, the EPS import filter reads the OPI comments and the links to the original high-resolution bitmap files on the OPI server. However, at print time, when PageMaker tries to resolve the links to the high-resolution images on the OPI server, it can’t access the server and print the document correctly.

To work around this issue, save the OPI proxy files as TIFF images, instead of EPS files. (OPI software applications allow you to save proxies as TIFF images.) Then you and your customers do not need to deselect the Read Embedded OPI Image Links option in the EPS Import filter dialog box. As a rule, you don’t want to turn off this option because it offers a unique benefit—it tracks and maintains links to embedded image data inside vector EPS files. If you choose to save the proxies as EPS files, then you’ll need to deselect the Read Embedded OPI Image Links option in the EPS Import filter dialog box before you place them. When the document is printed, the OPI server, not PageMaker, will handle the image replacement for high-resolution output. For proof printing, PageMaker passes through the low-resolution proxy image data.

Solutions
In your OPI server software, resave the high-resolution images as TIFF files. Then relink the PageMaker publication to those files.

OR

Replace the EPS proxy files in your PageMaker publications with the Read Embedded OPI Image Links option deselected:

1. Select a proxy file in your PageMaker publication. Then press Command (Macintosh) or Control (Win-dows) + D.
2. Locate the original EPS proxy file on your hard disk or server.
3. Select the Replacing Entire Graphic option in the Place dialog box. Press the Shift key, and double-click the file.
4. Deselect the Read Embedded OPI Image Links option in the EPS import filter dialog box, and click OK.
5. Repeat Steps 1–4 for every EPS proxy file. Then print your publication.

Additional information
If you’re managing a high-end OPI workflow using TIFF proxy files, you and your customers can still use the Read Embedded OPI Image Links option to maintain, report, and resolve links for non-proxy EPS files. Unlike

QuarkXPress, PageMaker checks for broken links to TIFF images inside EPS files and reports them using the Links Manager (choose File > Links in PageMaker). Just scan for the Ø symbol, which indicates a broken link to the image data. If you highlight the problem file in the Links Manager list, the Status information confirms the problem.

To fix the broken link :

1. Choose File > Links.
2. Select the first EPS with "Ø" next to its name, and click Info.
3. Select the image file listed in the Cannot Find field and choose Link.
4. Select the EPS file you want to link to in the Cannot Find field, and choose Link. After relinking the image data file, the Links dialog box says, "Links to referenced OPI image files are found."
5. Repeat Steps 1–4 for each problem EPS file. Then click OK, and print your proof copy.

Issue
Customers have been reporting that embedded device profiles from Photoshop 5.0x files are not being recognized when placed into PageMaker 6.5x documents. With the image selected on the page, these customers are choosing Element > Image > CMS Source and finding that the Source Profile window does not display the device profile embedded from Photoshop. The reason this is happening is that these customers have set the New Items Use option to None in the Color Management System Preferences dialog box. Instead, they need to set this option to the CMM they want to use.

Note: PageMaker and QuarkXPress do not color manage EPS or DCS files. Therefore, when you place an EPS or DCS file containing an embedded device profile into a PageMaker document, the submenu CMS Source is grayed out.

Solutions
Before placing tagged images into PageMaker 6.5x or earlier documents, set the New Items Use option to the desired CMM (choose File > Preferences, click the CMS Setup button, and select a CMM from the New Items Use popup menu).

Or

Replace the image after setting the New Items Use option to the desired CMM.

Additional information
When the New Items Use option is set to a specific CMM, PageMaker reads and preserves embedded device profiles for placed images. If this option is set to None, then these profiles are not read when placed into a document. If you then choose Element > Image > CMS Source, the expected embedded source profile is not displayed because PageMaker hasn’t read the device profile. PageMaker will read and preserve embedded profiles regardless of the selections you make for RGB and CMYK Image Source in the Color Management System Preferences dialog box.

To fix the broken link :

1. Choose File > Links.
2. Select the first EPS with "Ø" next to its name, and click Info.
3. Select the image file listed in the Cannot Find field and choose Link.
4. Select the EPS file you want to link to in the Cannot Find field, and choose Link. After relinking the image data file, the Links dialog box says, "Links to referenced OPI image files are found."
5. Repeat Steps 1–4 for each problem EPS file. Then click OK, and print your proof copy.

Occasionally, an Adobe Photoshop 5.0x customer will call Adobe Technical Support asking "What is Black Point Compensation in Photoshop 5.0x, and when should I use it?" This article will help you understand this new Black Point Compensation option—why it’s necessary, what it does, and when you should turn it on or off to transform Photoshop 5.0x images from one color space to an-other using ICC profiles.

Why is Black Point Compensation necessary?

Doing mode changes such as converting files from RGB to CMYK works differently in Photoshop 5.0x than it does in earlier versions of Photoshop. In version 5.0x, the conversion process uses ICC profiles that represent a source color space (where the file is coming from) and a destination color space (where the file is going). The problem is how to handle the conversion of black values using these profiles.

A black encoding method defines how black levels are mapped from one ICC profile to another. Currently, ICC profiles can use either a Relative or an Absolute black encoding method. However, the current ICC specification doesn’t stipulate which of these methods to use to map (convert) pure black values from the source pro-file to the destination profile. If a profile uses the Absolute method, the original pure black values (from the source color space) will map to different black values in the destination color space. Photoshop 5.0x always uses the Relative black encoding method for it’s predefined RGB working color spaces and for creating an ICC profile in Photoshop 5.0x. These profiles will always properly map black levels.

If an Absolute black encoding method is used for either the source profile and/or the destination profile, then unacceptable results can happen when the file is output—most notably, the blacks may look washed out on some devices. Note: A profile’s black level is defined as the L* value (Lab) that corresponds to device black. For profiles using relative black encoding, this value is always zero. For profiles using absolute black encoding, the value is non-zero— the exact value depends on the dynamic range of the particular device (lower dynamic range devices will have higher L* values).

What does Black Point Compensation do?

Our color engineers anticipated potential black level issues with device profiles using Absolute black encoding and included the Black Point Compensation option in Photoshop 5.0x. The goal is to represent a good black for the final output when the image is mapped from one color space to the other. When this option is selected, Photoshop 5.0x reads the black levels of both profiles (the source and the destination) to determine their black levels. If the black levels are going to produce acceptable results on that de-vice (because both the source and destination profiles use the Relative black encoding method), then Photoshop 5.0x maps the image from the source profile to the destination profile without using Black Point Compensation. If Photoshop 5.0x determines that either one or both of the two profiles uses the Absolute black encoding method, then an extra step occurs to ensure that the black levels of the source profile correctly map to the black level of the destination profile —using Black Point Compensation. Black Point Compensation can be enabled in the following dialog boxes in Photoshop 5.0x:

• CMYK Setup (ICC mode)
• Profile to Profile
• Profile Mismatch
• Missing Profile

When should you enable versus disable Black Point Compensation?

We recommend enabling Black Point Compensation for the majority of your work. For example, turn it on when you do a mode change from RGB to CMYK.

We also recommend enabling Black Point Compensation when you’re opening images that contain embedded profiles that are different from your defined working color space (Profile Mismatch) and when opening untagged images (Missing Profile). If the application deter-mines that there are no black level mismatches, then the images are converted without any compensation. There are two scenarios where using Black Point Compensation can cause unacceptable results—usually washed out detail in the shadows and other dark regions of a final image. The first is most likely to occur when you do a Profile-to-Profile mode change to map images from one RGB source profile (a scanner or RGB working color space) to an RGB destination profile (a film recorder). The second scenario is most likely to occur when you’re soft proofing output, such as newsprint, on a printer that has a low dynamic range (where the blacks are not very dense). By disabling Black Point Compensation before doing the Profile-to-Profile mode change, the soft proof will more accurately simulate on-screen the effect of this low dynamic range.

Conclusion

When your final output is to an RGB output device or you’re soft-proofing to a low-dynamic-range printing device, we recommend disabling Black Point Compensation in Photoshop 5.0x. In all other cases, Black Point Compensation should properly map black levels from one color space to another using ICC profiles. If you en-counter unacceptable results with this option enabled (under conditions not mentioned in this article), please call Adobe Technical Support to report them. We want to track these issues and report them to the Photoshop Engineering team. In closing, we’d like to take a moment and thank some people who helped research and provide content for this article. The Photoshop Engineering, and Photoshop Technical Support teams both provided a lot of information. In addition, we spoke with three industry ex-perts: Andrew Rodney, Bruce Fraser, and Don Hutcheson. Their suggestions were most valuable.

ReadMe Now is presented here as a portion of an original newsletter distributed solely for Adobe Authorized Service Providers (AASP). Content concerning only AASP's has been omitted for brevity. All other information is unaltered from original document content, only the layout has been changed. For more technical support, contact Adobe CustomerFirst Support at: http://www.adobe.com/supportservice/custsupport/main.html

Adobe, the Adobe logo, Acrobat, Adobe Premiere, Adobe Type Manager, ATM, Distiller, Exchange, Illustrator, PageMaker, PageMill, Photoshop, PostScript, and PressReady are trademarks of Adobe Systems Incorporated. Apple, Macintosh, and Power Macintosh are trademarks of Apple Computer, Inc., registered in the U.S. and other countries. Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation. All other trademarks are the property of their respective owners.

© 1998 Adobe Systems Incorporated. All rights reserved.