You are correct, I forgot after to fix what I said about that.

Whoever I was getting collections of stuff at the time had a folder labeled Blender plugins.

The day after I posted that, I was trying to get them to work again and eventually opened up the plugins....

After reading some of what was in there, I discovered the plugins are in fact for QUARK - Quake Army Knife.

Which does a whole mess of stuff, including mapping & exporting/converting I guess for several different games I've not even begun to play with yet.

So wherever I got the plugins from, had been initially mislabeled.