Yes, sorry, it's Symantec Endpoint Protection. It's version 11.0,5002.333. I am running Windows 7 Home SP 1. Yes there are errors in the Windows Event Viewer (CAPI2, event ID 4107). I turned off Microsoft Security Essentials before running a scan with Symantec. SEP still "stops working".
I can't check the processess in task manager because Symantec crashes before I can run a scan. However, the product icon shows up in my taskbar and everything looks fine; it's just when I run a scan that it crashes.
When I say "crash", I mean the error message from windows telling me that Symatec has stopped working.