Better instead to patch and verify a game:ġ.

Never uninstall and reinstall a game unless you know it's going to fix a specific problem more often than not it's going to be a waste of time, especially using slow internet connections. Bester had already nailed it in his response comment, I only filled in some directory info for clarity.

Next time read through an entire discussion it might have advice like in this case that saves you some panic.