Your global (assuming local global, not Project Server) sounds like the problem (reading more carefully might have helped but sometimes I’m too fast for my own good). Try this first. try replacing your global with someone elses global. To access the global, go to ‘your user’ / AppData / Roaming / Microsoft / MS Project / 14 / 1033. Rename the existing global and copy in one from someone else. If that doesn’t work than reinstall. The uninstall might not actually delete the global so uninstall, then check and delete (or rename the gloab), and then reinstall.