What kind of extentions do your file names have?I have had problems such as this several times and found by changing the ext. on the roms to something the emulator would understand cured this problem for me.I can tell you all my roms for nintendo 64 are unzipped and all my file ext. are "USA" if your files are not setup in this way change the file ext. to USA and make sure the file is unzipped.You will only need to try this on 1 or 2 roms if it works you know what you got to do.And if this is the case there are programs available to rename your whole set of roms quickly with whatever ext. you want to use.These programs are in the pinned topics in the emulator section somewhere if this is the problem.If you cant find the programs let me know I will dig you up a link.
