I'm using the MVVM Light Toolkit in my App. Though I don't know if my problem is related to it. I have added a ContextMenu Entry for the Windows Explorer on Win7 32bit.
It looks like this:
[HKEY_CLASSES_ROOT\*\shell\MyEntry]
[HKEY_CLASSES_ROOT\*\shell\MyEntry\command] "MyPath+MyExe" "%1"
Now if I open a file from the Folder where myExe is all works like it should, but if I try to open a file from a different Folder my App crashes instantly.
I hope someone can help me there.
Edit: I'm not doing anything with the start arguments in my app yet.