I had a bunch of games installed on an external drive which doesn't exist anymore. Now the games are listed as 'game not available' and in the install details it shows an install path that doesn't exist anymore. If I try to uninstall the game so that I can reinstall it, it disappears for a few seconds before reappearing in the same state.
I've tried the move installation option, that fails and the game reverts to its previous state.
I've tried to change the install path, that fails and the game reverts to its previous state.
I can't seem to do anything with it. I figured if I change the install path to somewhere else (that does exist) and then tell it to verify it's files, it would reinstall, but I can't get it to change the install path through the UI, and can't find a config file where that path is recorded