Let me clarify a little more. The following emulators run fine utilizing the line structure that Project64 has a problem with: MESS, MAME, Nestopia, ZSNES, Kega Fusion, ePSXe, MekaW, StellaW, VisualBoy Advance, NeoPop...Those are just the ones that I'm currently using. I know the following emulators also work using that same line structure that Project64 has a problem with: Gens, Z26, JNES (and many other NES emulators), SNES9x...and the list goes on.
The line structure:
D:\Any Emulator>Anyemu.exe "D:\Any rom directory\Any rom name.zip"
or
D:\Any Emulator>Anyemu.exe "Any rom name.zip"
All aforementioned emulators can run both line structures without a problem.
I believe the problem lies with Project64 believing the quote is part of the ROM name, or it has problems reading quotes entirely. DemonSui, I appreciate the quick replies, however, the structure of the line has to remain the same. FWIW, I tried your idea:
"D:\emulators\project64\project64.exe" "D:\N64 ROMS\Super Mario 64 (U) [!].zip"
Same results. No dice. Again I believe Project64 has problems interpeting the quotes as being part of the ROM name, or just has problems reading quotes in general.
-Trebor