That's a known issue... (Bug reports)
That error message is strongly associated to security software messing with icomancer. Please run it as administrator and you will be fixed unless you are trying to set icons to folders protected by Windows or your antivirus.
Complete thread:
- Error - Richard White, 2014-05-15, 23:16
- That's a known issue... - acaballero, 2014-05-16, 03:52