Me again and one of my problems.

This: I want to incorporate the GTD Sagittarius from TVWP in my own mod. But when I try to place it in FRED it says:
Assert: file_path && strlen(file_path)
File: cfile.cpp
Line: 652
ntdll.dll! ZwWaitForSingleObject + 21 bytes
kernel32.dll! WaitForSingleObjectEx + 67 bytes
kernel32.dll! WaitForSingleObject + 18 bytes
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
USER32.dll! gapfnScSendMessage + 818 bytes
USER32.dll! GetThreadDesktop + 215 bytes
USER32.dll! GetClientRect + 197 bytes
USER32.dll! CallWindowProcW + 27 bytes
OPENGL32.dll! wglSwapBuffers + 730 bytes
USER32.dll! gapfnScSendMessage + 818 bytes
USER32.dll! GetThreadDesktop + 215 bytes
USER32.dll! CharPrevW + 312 bytes
USER32.dll! DispatchMessageA + 15 bytes
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
fred2_open_3_7_0-DEBUG.exe! <no symbol>
kernel32.dll! BaseThreadInitThunk + 18 bytes
ntdll.dll! RtlInitializeExceptionChain + 99 bytes
ntdll.dll! RtlInitializeExceptionChain + 54 bytes
FRED2_open.log is attached. The funny thing is: When I switch to TVWP it doesn't cause any problems.
[attachment deleted by ninja]