Not one crash since I moved the HD cards from the Magma chassis to the Mac! Everything is working perfectly, knock on wood. Recorded melody and solo for the piece in 21/8. What has always worked well for me is to listen to something over and over until it is internalized. I learned bulerias when I was in my late twenties, and what helped me then was to program a drummachine with a bulerias pattern and to let it play softly while I was sleeping.
With the 21/8 piece, as with all music in odd time signatures, I felt it was important to feel the rhythm rather than counting along in my head. For a few weeks I have been listening to the music and yesterday I was able to come up with a nice melody and solo that simply flowed.