Hello How can I uninstall Quicktime 7.4.5? It seems nothing is available on Mac download site other than QT 7.0.1 The problem begins when just after automatically updating QT through the built-in downloader, a CAD program will not restart. The error window reads : <Problem: QuickTime is outdated or missing. <ArchiCAD requires QuickTime 4.0 or later, image compressors and <decompressors. <Make sure you have QuickTime installed with the "Recommended" <option chosen at installation and not with the minimal option selected. <Uninstall QT then reinstall it with the recommended option selected. Now I know that I have QT 7.4.5, so I figure it best to uninstall it and reinstall another version, like 7.2 or even earlier. Anyone with an idea of what to do? I'm in dire need of my software and I can't find any other solution..... Thanks in advance for any help.