I am using SWX 2012 0.0 and i have check the setps you mentioned but my SWX12 has not crashed and works fine.
You can diagnose the crashing issue by Rclick on the My computer icon at the desktop>manage>system tools> event viewer>windows log> application and search out for the red mark at the level tab. Here you will find out that what is the reson for crash.
Also you can repair the SWX installation by disabling firewal from the administrative tools> services.
Hope this will help.