Yes, what you did is not supported (in the way you did it). Even though both apps may look the same (due to the UI skin used) and many features work the same way, these are independent apps. Exchanging their configuration data and/or digital media databases can cause unpredictable results. Even some Winamp plug-ins may not work with WACUP without being updated. Given time, dro is willing to try to update some of these incompatible plug-ins when possible.