After doing a successful first scan after re-installing Windows 7 Professional, I ran the whitelist tool to expedite future scans. It took about 10 hours as I had over 1.03 million files to white list. When it completed I tried to open one of my external drives and received the error: F:\ Server execution failed

I can run my programs, but I cannot open any drive or folder. Not even my profile, Control Panel or Computer. I found what seemed to be a fix, but it failed. ChkDsk and SFC found no errors.

The fix I tried was this command entered in the Command Prompt as Administrator: net localgroup "Administrators" "NT Authority\Local Services" /add
It returned System Error 1376: specified local group does not exist

I am using Spybot version Home Edition.