Problem with reaktor

Hello!
I have some problems with reaktor in mpc software (last version): when i use it
Software shouting down. And i can't export tracks and sequenses with this plugin (bugs). When i delete plugin programms with reaktor, everything is fine.
What can i do? Does anybody have the same things?

Not sure, I've been running Reaktor 6 on a submix bus for FX without any problems. The VSTi version works fine for me as well.