Uninstall of 1.0.2. wouldn't help. You need to reinstall the game. That means to uninstall it completely, then install vanilla BS (1.0), then apply patch 1.0.2. Before uninstall, deactivate the game to save activation (no big deal if you missed that part).
There is possibility to have some issues even after reinstall. There are solutions explained on forum, so it will be solvable.