Here's another solution from Steve Thomas, our friendly neighborhood App-V beta engineer. This time he brings news on how we can now virtualize Adobe Photoshop 7.x using Microsoft App-V 4.5:
Issue: When you attempt to run a virtualized version of Adobe Photoshop 7.x using SoftGrid 4.2x or earlier and Windows Vista clients, the application will fail and generate the following error:
Application Error: User Information Missing
Note: This issue does not occur on Windows XP based clients.
Cause: This is a known issue in versions of SoftGrid prior to Microsoft Application Virtualization (App-V) 4.5.
Resolution: This issue has been resolved in Microsoft Application Virtualization 4.5. To prevent the issue from occurring sequence and run Adobe Photoshop 7.x using an App-V 4.5 based sequencer and client.
J.C. Hornbeck | Manageability Knowledge Engineer
Here's another solution from Steve Thomas, our friendly neighborhood App-V beta engineer.  This
FW: Virtualizing Adobe Photoshop 7.x with Microsoft App-V 4.5 Feed: The App-V Blog Posted on: Monday