For some reason my RSE sounds have become out of tune with the MIDI generated sounds. I know that it is the RSE that are out of tune because the MIDI sounds match my RL guitar, whereas the RSE sound eerily dissonant when I try and play along. Also, this has caused any of the songs that I've written in GP that have RSE and MIDI instruments to sound just awful. Any ideas on how to rectify this?
I've had the same problem, my tabs are written in Drop Db though :P So that might be why they sound "off." Are you using some odd tuning besides standard?