VSL and 1.0.30

VST Expressionmaps for VSL are working fine, but with regard to VSL’s Vienna Ensemble Pro my biggest problem is to get instruments connect to the channels in VEPro in the first place. One instrument connects to the first channel ok, but then trying to connect the second instr. to channel two no midi information reaches VEPro. Strange enough, when changing the first instrument to the second channel it does react.?
I managed to get three channels working but then the fourth didn’t.
It might has something to do with the existence of 16 midi ports in VEPro (makes 256 channels). Or do I miss something?

Gerard