KB ArticlesTurboCAD Mac Forum http://st.imsisupport.com/index.php?pf=kb&page=article&id=78Clean Installationhttp://st.imsisupport.com/index.php?pf=kb&page=article&id=76Installing applications from an unidentified developerhttp://st.imsisupport.com/index.php?pf=kb&page=article&id=74Clearing out the Built-In folderhttp://st.imsisupport.com/index.php?pf=kb&page=article&id=69Run as administer… (Vista/Win7 only)http://st.imsisupport.com/index.php?pf=kb&page=article&id=68