I just did a test, in DCS Beta, with latest patch, and if my throttle is in the idle position before I hit the engine start switch, the engine won't wind up.
Once I hit the cutoff lever behind the throttle and throttle is in off position, then I hit engine start switch again, the engine started winding up, once RPM is at 092, then I moved throttle to idle, and engine wound up fully till it was idling.

just my two penneth.

Cheers Dragon
That seems to work

Looks like back up an running
Had to reset the throttle control in settings in DCS , but all seems good now