This issue has appeared with Mac and Win users of photoshop CS. It is a sporadic issue and does not occur consistently.
Problem: When creating an automated web slideshow from a selected folder, there is an option to automatically add custom text to the photos. I use this to put my copyright info directly on the photograph. Most of the time it works beautifully, but sometimes I can see that the custom text writing script is running during the resizing of the photos for the slideshow, and the text is being added on, but when the slideshow preview runs, the text is missing! Other times, even though I have not changed a thing in my preferences in the custom text area, NO script runs at all! In both instances, the text is completely missing when slideshow and/or individual photos are viewed manually as well. This has been very frustrating. Any help? I sat side by side wih a MAC user and had the same trouble.