I'm using QtCreator 2.2, and just now when the 'Update' icon appeared, I updated the files it specified. I got a 'Installation Error' message at one point, but chose the Ignore option--big mistake I guess. Now I can no longer launch Qt, and when I try from the terminal I get

error while loading shared libraries: libExtensionSystem.so.1: cannot open shared object file: No such file or directory
Great! Do I have to reinstall Qt? Or is there an easier fix? Thanks--