New Apple guidelines require that any software package installed on OSX 10.8 (Mountain Lion) meet certain security standards in order to comply with this requirement, this re-released full version of AutoCAD has been built to include the changes distributed through the Service Pack. This complete package download should only be used if you require a complete re-install of the AutoCAD software, for example, you're changing machines, Technical Support has suggested you re-install, etc. This full version re-release of AutoCAD 2012 for Mac is provided for customers who require a fresh install.