I've been using BiaB for many years, and have purchased every version, but have gotten behind in installing them. I just installed 2012 over my 2011.5, and am going through the 2012 tutorial feature by feature. When trying out the new "Simpler RealTracks" option, I ran into some strange stuff. On some older songs I had, when I went to the "Assign RealTracks" dialog and selected a new track, e.g. bass was #711 and I changed it to #921, it wouldn't make the change. After making the change, the BiaB main screen shows the Bass track as "~~921:Bass, Acoustic, Bossa Ev 110", but when I right click on the bass track and go to the "Assign RealTracks" dialog, at the top, under the heading "Assign to this Track" it displays "711 Bass,Acoustic,Bossa Ev 75", and in the list of RealTracks below, the line for Bass #711 is highlighted. If I click the "Generate Track" button on the "Assign RealTracks" screen, the BiaB main screen shows the correct track # at the top left while the track is being regen'd, but then it pops back the old track number when the regen is done! I've tried this in several differnt songs, including a new 4-bar simple test song I just created, and sometimes I'm successful at changing the RealTrack and sometimes I'm not, and I don't see a pattern. Any ideas?