This appeared when porting ACRE for A2 to A3.
ACRE uses a "base" item class that descends from ItemRadio (as so people start out with a radio by default since its included on all players) that ACRE then replaces with a uniquely ID'd weapon class name. It checks to see if a base class exists in your inventory, and then it gets a unique ID class, adds that and removes the base class. If ACRE can not remove the base class it can not tell if that is an additional new non-ID radio or if its the original and it fails to work properly.