According to an Adobe tech note, it’s possible that the Adobe Version Cue CS3 3.1.0 update won’t get installed correctly, leading to a damaged framework file that can cause Photoshop to crash. To fix the problem, you can download this small updater and run it. If you’re not able to run the script (e.g. you don’t have admin privileges on your machine), you can go into Photoshop preferences (Cmd-K), then go into File Handling and uncheck "Enable Version Cue." The tech note mentions other Adobe CS3 apps, but I’ve tried the fix only with Photoshop. In any event running the updater is a good idea.