I'm running SW 2010 SP 1.0 on XP64.   When I 'add-in' PDM workgroup, SW becomes VERY unstable when opening assemblies.  It will crash fairly regularly.  (1 out of every three file opens.)   If I don't have it on, SW is very stable.

It is a fresh install of 2010 SP1.0.  and Solidworks RX gives a green check for everything.

Ideas? Has anyone else seen this problem.  My coworkers with XP32 don't seem to have this issue.

Sam