Well, there it is again ...
Installed REmatrix (full version) and tried to customize the ACT controller assignment. It works as long as I do not close Sonar, but when I exit Sonar and start again, my ACT mappings for REmatrix are all messed up.
I notice both xml files in the "%APPDATA%/cakewalk/ACT Data" get changed and when compared to other ACT mappings in the file (which were there for a long time and do work e.g. Channel Tools) the REmatrix ACT stuff looks reasonable, but still it doesn't work i.e. it's all messed about after restart.
I tried renaming those ACT files so that Sonar creates new ones, but I get the same situation.
BTW I'm using ACT on the VS-700 (but I think ACT is ACT so this shouldn't be a controller specific issue)