Hi I'm using Autocad 2013 for mac at work and I've been experiencing crashes. My company had bought a new mac and it came with the Yosemite OS which seems to be non-compatible for Acad 2013. I've installed the service pack and still face crashes. What can I do? Also I've tried to uninstall 2013 but am faced with a problem where the uninstaller starts and hangs when it gets to the uninstalling process.