It is an access violation error. What does the stack trace look like in the event log that is generated when your app crashes.
Also note that hopefully you're generating PDBs when you build your code. In that case drop the PDB files into the directory where the app is running. Then run the app and let it crash. In the WER dialog that pops up is an option to view the technical details. In that UI is a link to the crash dump file. Grab the crash dump file and move it to a machine that has your app's code, the binaries being used by the client and Visual Studio. Then load up the crash dump in VS and you should be able to quickly narrow down where it is crashing and probably why.