Last post on this. All is cool. My Mac problem was user error - my fault. I forgot to update the Mac with the new update from Twisted Tools like I did on the PC. So I synchronized the PC to the MAC and went through the steps for import and I got everything up and running. Now I know both systems are running the same stuff, and random tests shows that everything is running well. The moral for me is that the file browser IMPORT function is the do-all button. You don't need to copy files into special places or set your own user paths and rescan - just point and click (import). You can also set your bank and style tags at that point and be done with it. The file relative associations seem to be built properly when you do your own import. So all the Expansion packs, Transistor Rhythm, and TT01 and TT02 are set up. By the way, Transistor Rhythms has some really high quality samples. So Import seems to be a more powerful form of scan, or some deeper function, I don't know the real difference.