So I wanted to go back to Dangerous Rays Alpha 16 since 17 doesn't have the big terrain generation, so I manually uninstalled the game by dragging all of the associated files into the recycle bin and deleting them. Now the installer keeps telling me I need to uninstall the game some way, but the game is gone, I checked, and I can't install the game anymore at all. Does the game make a change to a small file somewhere, is that what's doing it?
Not sure where I was supposed to post this, it's not directly associated to the gameplay, just the raw files it seems.
Edit: I was able to fix the issue by running a system restore, so I've been able to reinstall the game.