Don't rename 3dn files to the nes extention. I repeat once again. 3dn files are just 3D patch file for a specific game. Use your own rom file to play your game. 3DNes works just like any other emulators.
I know that, those are my actual roms, and the 3dn files have the same name as the rom, except for the extension. The new version also does not work.
