Okay, so here is a strange one. I've been working on this application for a few days now, and have had people beta testing it day by day. well last night I did a pretty big update on it, and release the beta to a few people, all with different architectures and other devices, and now it wont run on any of there computers. It begins to load, and then just closes. No errors, hanging, or overflow. the max it gets at in ram usage is 27k. No windows load either. They only thing that is a reference is the itunes sdk, which hasnt changed since I started making this app. I've checked the form load, and nothing there is causing it to end. I even commented out all the code I added last night, and still nothing. Any ideas? If anyone needs to see the source code, I'll PM it to you.