Hello Everyone, I am having problems with Autodesk's Revit Architecture 2010 under parallels. Revit Architecture (RAC) 2009 has been working fine. All of our systems have 4GB of RAM, with 2GB allocated to the VM. Some machines are running from a boot camp partition, others have had to be re-installed, and are now running as a pure VM in either Windows XP Professional or Windows Vista Business. In any case, I have been trying to work with Autodesk to resolve some crashes (will post later) but it seems I am getting some very broad diagnostic solutions. If anyone has any feedback about this program and their experience using it under Parallels (please specify which version) I would like to hear from you. Update: Well, I've upgraded my user who was running 3.0-5608 to 4.0-3810 (I know this is not the latest) because Windows crashed due to a "device driver problem". The crash was sudden and automatically reset. I also updated Windows XP to SP3 and allocated 128MB of video memory to the VM. Hypervisor is not enabled and only 1 core is allocated (since I installed Windows XP VM with only 1 core I read somewhere that enabling more cores won't do much good, and Revit isn't a multi-threaded application anyhow). Will let you know what problems are coming up for this user soon!