DimPro Stuck MIDI notes with Cubase 4

Please, i have same problem of Mortis with Cubase 4.

"I installed Dimension Pro and the 1.2 update.
I can play it as usual via MIDI-Keyboard.

But when I record some stuff and then play this MIDI-Record, every MIDI-note stucks in Dimension Pro.
All my ohter VSTi are behavong normal and correct.
Only Dimension Pro can't read the recorded MIDI correctly...

The multitimbral function is no solution.

How can I fix that problem? "

Thanks