Can you point me at what copy / version of the plug-in you're trying to use please. Also what have you done so far to try to use the plug-in with WACUP?
As it should be able to run without any issue as long as it's been able to be installed correctly into WACUP & that you're either running in a normal WACUP install or if it's a portable install that the option on Preferences -> Advanced -> Portable to allow for 3rd party plug-ins has been enabled.
-dro