I have the same problem here. I own both Solo Strings and Dimension Violins, and some of the sequence things don't work even when all squares in the matrix are "blue".
I have the latest versions of VI and Solo Strings and Dimension violins.
In dimension violins, the matrix "11 repetitions" doesn't work, while matrix "12 repetition-dyn" does work.
In solo strings, the chord repetition matrices don't work. The odd thing is that a few months ago, I'm sure they were working, so has something in an update made them not work?
Any suggestions out there?