I just tried to download a part from McMaster-Carr.  When the dialog box opened asking if I wanted to Open or Save the file I chose Open and nothing happened.  I tried again and chose Save.  Then the model showed up in SW but wouldn't completely load, and then SW crashed.  It's happened before.  Does anyone have any idea what could be wrong?  I'm using SW2010 sp4.0.  Are the McMaster-Carr files in 2011 or what?