Hello! I have a mac mini that match (and sometime excedes) all tech system requirements (for example I have 4GB ram and the 10.5.8 Mac OS). I already had a version of Draftsight version (october 2012, so I think was the version before last released) but it expired. I download the current version Beta V1R3.2 (2013 3.401 for MAC) of this software but despite it says as system requirements (it would work under a 4GB Mac with 10.5.8 OS), once installed it says cannot run under my OS and stop itself. Any help? Thanks!