OMG you guys kick ass! 7800 is working nicely here.
One thing that happened to me during the install though, was that my es_systems.cfg file got wiped out. (I’ve had trouble with the file before, I think because I have some systems commented out.) I had a copy on my desktop so recovery was simple. So definitely make a backup first. ;)
…now I just need to get a colecovision emulator working.