I am using Squeak on a Vista PC. When I have Squeak open and switch to another window, after about 2 minutes, Squeak crashes and brings up the Emergency Evaluator.  The information in the evaluator dump doesn’t reference any of my code but I realize it still could have been something I was running that triggered it.  This happens when I have my System browser open and it doesn’t matter whether or not I have any morphs displayed in world.  I haven’t tried switching with the System browser closed. Has anyone else had this trouble?  The error message at the top of the Emergency Evaluator stack is:  “Error: a primitive has failed.” 

CSW