Virtualcol ATR powerloss

Hi all,

I´ve run into a strange problem with Virtualcol ATR 42 in Prepar3dv3.

After a normal takeoff roll the plane loses power from the throttles at 300-400 feet. At this altitude the throttles smoothly move back to 0% and they seem to be locked there??

However, this only happens when I run through to complete startup procedure from cold and dark. When choosing to begin flight with eniges running at active RWY this does not happen. So obviously I´m doing something wrong when running through checklists and preparing for flight.

Any ideas on what may cause such throttle-behaviour is much appreciated..

Thanks in advance