1. Unregister your current powermon.dll:
C:\windows\system32\regsvr32 /u powermon.dll
2. Move the powermon directory to:
C:\Program Files\Road Runner\Plugins\Powermon
3. Delete all other copies of the powermon and pm_images directories or whatever else you may have named them.
4. Register the dll using the "register.bat" batch file.
5. Move the "pm_images" folder from beneath the powermon directory to the skin directory:
C:\Program Files\Road Runner\Skins\bmv2\pm_images
6. Restart RR.