MD-11 panel freezes & crashes FSX

Hi,I cant see the answer for my prob on this forum, so here goes. I have submitted a few tickets to PMDG but no response for 24hr so hope this helps. I've tried uninstalling and installing the MD-11 again but every time I select an MD-11 from my opening scene aircraft, it freezes then shuts FSX down. The PMDG panel in any other ac does the same thing so I guess it's the panel. Do I somehow have to make the MD-11 the opening sequence ac? If so how??Also, the ac don't have dynamic parts on the exterior (or the VC but I'm not so worried about that. Flaps, ailerons, lights etc, nothing responds to the usual key assiciations I have. (I have seen the VC because I put a freeware MD-11 panel into the PMDG model, to see if it was caused by the ac itself).The most pricey payare I've purchsed so I hope anyone out there can assist. Thanks for your (anyones) help.SimonWindows 7, 64bit