...Just tried it out. When I start from the removable drive I recieve an exception error: Application has generated an exception that could not be handled. Process id=0x40c (1036), Thread id=0xf08 (3848) ...and when i choose to debug, the CLR debugger shows: An unhandled exception of type 'System.IO.FileNotFoundException' occurred in GameEx.exe Additional information: The specified module could not be found. ...and when I break, at address "GameEx.GameEx.mainform..ctor" the dissassembler shows the error at: 00000c5b mov dword ptr [eax+000002A4h],0 00000c65 mov dword ptr [ebp-54h],79h 00000c6c mov eax,dword ptr [ebp-14h] 00000c6f mov dword ptr [eax+000002A8h],0 00000c79 mov dword ptr [ebp-54h],7Ah 00000c80 mov ecx,10E3A28h 00000c85 call 7835B186 00000c8a mov esi,eax <---- --- -- - - - - - HERE 00000c8c mov ecx,esi 00000c8e call dword ptr ds:[010E3A84h] 00000c94 mov eax,dword ptr [ebp-14h] 00000c97 lea edx,[eax+000002ACh] 00000c9d call FFAEC61E