I recently started getting this error message and am now unable to use SW2011 on my laptop. We had to dual load SW2006 & 2011 due to a customer requiring us to use an older version of SW. I am able to utilize the 2006 install, but now cannot get 2011 to work. I've tried looking online but can't find anything about this problem and SolidWorks. Does anyone have any ideas what might be causing this problem? I've tried to repair the install and it is still giving me the same error.