Level-D 763

Hello BryanI have posted this in the main FSX Forum but have not got very far with a resolution or an answer.Did a long flight from YMML to YPPH.Not one glitch the entire flight.Earlier to that I had been having problems getting VNAV to engage and stay engaged.Eventually,through LDS767's Forum,I managed to sort that one out.Upon arrival at YPPH gate,just before I shut down the engines, I tried to select the Ground Crew call button,whereupon I immediately got a CTD.Bang went my flight log.Looking at Event Viewer immediately after,it reported a StackHash-b87c error.Now,I have managed to get information of what can cause a StackHash error but why is this happening ONLY when I select that Ground Crew call button when using Voice Commander is an answer I have not been able to track down. After fixing the VNAV issue,ran a long transatlantic flight without Voice Commander and had no hitch whatsoever selecting Ground Power,etc via the Ground Crew call button.