I had the same problem.
Am I right, you can >Format -> Result< the table to show as a matrix? (When its not too large anyway!)
In my case the problem was a former installation of mc6+, still residing in the computer. I had to move to another machine to resolve the problem.
(I didnt want to delete the whole system and reinstall (because of dll-confusion). Furthermore I really love the 6+ (far better formula-interface).)
LG
mattcat h.