@ Bart,
The problem with the Stack-list is solved in this Beta version...
When I load my show, I can double-click the Stack-list without any problems

That issue about the RGB and the CMY color-mix...
It would be nice when this will follow the programmed fade-in/out times...
because the parameters are full proportional and not a ON/OFF thing !
This will make it easier to program the show and it gives more options to make some nice effects in a single cue !
(and normally... in each cue, the fade-in/out times are set to the same value.)