Try running icomancer as administrator (Support requests)
This is a common issue, and is caused by your security software messing up with icomancer at the time of setting the icon to the folder.
If you run icomancer as administrator it will be able to work fine.
Complete thread:
- An application unhandled exception has raised - Vic, 2016-02-06, 05:41
- Try running icomancer as administrator - acaballero, 2016-02-06, 16:54