Longshot here. I screwed something up and this is my last resort before a new OS install is needed.
Ended up screwing up my game, so that it now saves to appdata\local\virtualstore\ instead of the usual roaming folder, and now whenever I try uninstalling or installing the game I get a "Can't Access network location \." error message before anything really happens.
All I did was mess around with a couple small texture mods, really don't understand how this could have happened. I've tried a few fixes already that didn't help the situation. I should also note the game still runs, just saves to that stupid folder even with parts of UAC disabled.
If anybody has a registry fix or has an idea what is wrong, please let me know!