We have been getting fatal errors on AutoCAD Mechanical 2013. We are using an old version of Wrench PDM which excepts only AutoCAD 2000 version files so we have setup the AutoCAD to save the files as a 2000 Version file by default. We have tried reinstalling .net, resetting profiles, Recover files, audit and purge. But the problems persist.
Intel core2duo processor 4GB RAM 80GB Hard-disk Windows 7 64bit