A sharing violation occurred while accessing an unnamed file

When meshing I get the message "A sharing violation occurred while accessing an unnamed file"  A prior thread indicated this was caused by the virus checker.  I turned automatic virus checking off on Microsoft Security Essentials.  The error went away.  Does anyone know what processes I have to allow through the virus checker to prevent this error.  I want to leave my virus checker on.  There are quite a few .exe files in the simulation and cosmos folders.

Thanks,

Jason

SolidworksSimulation