TEMP Environment variable corruption

[aybara]

I have a VBP scheduled task to run as myself frequently throughout the day (every 10 minutes) and 99% of the time (if not more) it works. But on occasion I get weird errors like this:

c1xx : fatal error C1083: Cannot open compiler intermediate file: 'C:\DOCUME~1\blake\LOCALS~1\TeUME~1\blake\LOCALS~1 \Temp\_CL_aaa02140ex': No such file or directory

which leads me to believe that somehow my TEMP environment variable is getting correupted. My TEMP env variable is normally set to

C:\DOCUME~1\blake\LOCALS~1\Temp



Has anyone run into this problem? Any idea what would be corrupting the TEMP env variable or something else that would cause this?