Hello and welcome to justanswer, My name is ***** ***** i will be assisting you today
Please try this solution and let me know the results :
yes it could be, can you installed on your internal hard rive and try again.
If it did not work please try to uninstall cs3 and reinstall it again.
Yes of course, just try my previous suggestions and if you still need help reply back to me and i will glaldy continue to help