Some plugins behave funny in my system, in eXT, but also in Tracktion. They work fine in Muzys. For example:
ProtoypX (former version of Protoplasm)-Doesn't play from the keyboard;
Lallapalloza Lite-The arpegiator doesn't work while playing from the keyboard;
Analog Warfare 2-Doesn't play from the keyboard, except Hard Sync patch from midi channel 6 (??)
Arppe2600vaX-Doesn't play from the keyboard, except selecting midi channel 2 from the interface
E-Flex3-Doesn't play from the keyboard;
...etc... (only to name some)
Hardware problem?:
1-They all play fine from the piano roll, so there's nothing wrong with my sound board;
2-Many other plugs play fine, and these ones play fine in Muzys, so there's nothing wrong with my keyboard;
Plugins problem?:
Well, they are all Synthedit (surprise, surprise ?);
But on the other hand they work fine in Muzys, and I haven't seen much people reporting these kind of problems;
Host problem?:
A problem in eXT and Tracktion? In both of them
Or...
An unfortunate combination of oddities in Synthedit, eXT or Tracktion and my Evolution keyboard?
Your guess is as good as mine