@THRobinson Oh well. It was worth asking. I would be very cautious about using any computer image that has no official source, especially with something as popular as RetroPie has become. For one thing, almost NONE of us have the same hardware configuration, so one size almost never fits all. Also, the work you describe that is already done for you is very likely work that makes the image totally illegal, violating all kinds of software licenses if not copyrights. If someone is willing to create, then post an image with ROMs on it, or with emulators downloaded and preconfigured where the license doesn't allow that, it isn't doing RetroPie any favors which is another reason folks are going to be reluctant to offer help.

@loubatron03 Most likely you have the wrong type of roms (without headers). This is mentioned on the page.

unpack the rom and do file /path/to/rom from commandline and it will tell you what sort of file it is. If it says data file it's the wrong type. If it recognises it as a nes rom, it's correct.

Hello meleu and thank you for your reply.
I have reinstalled the software, which works, but now have a problem loading the roms via a USB pen drive.

The roms do not show up and no sign of the emulators.

Best wishes,

Listener