Thank you j-v! I pressed the ctrl-shift while opening the program, and the box "Do you want to reset..." appears, and I selected "Delete all cached.." and pressed the Yes box. The same error box appears: "Movie Studio Platinum has stopped working" and it freezes on "Creating File I/O manager". I have uninstalled and reinstalled the program 4 times. I looked in Task Manager for any process that has "File I/O" in it but could not find one. I have run virus protection, CCleaner, and even pulled out the battery on my laptop and pressed power to get rid of any memory data. I have attempted to open the program from different .vf files of movies that I have made before, and it attempts to bring up an old copy of Vegas (version 9). I updated to version 17 this spring, and have created a couple of movies with no issues before. Waiting for technical support, luckily this development is not for my employment! Thank you for any help - I am relatively technical and can modify registry entries, etc, if I need to.