I have the unregistered version of fsuipc. i've read that you don't need the registered version for most add-ons. trike-immersion and precipitfx seems to work fine, but the 737 immersion does not. i don't see any change in lighting, and no wing/engine condensation either. does the 737 immersion require the registered version of fsuipc or is there something else that might be the problem?