I installed Acceleration last night on the following system:
Vista Home Premium
AMD 64x2 4600+
FSX Deluxe with SP1
UT USA and UT Canada
When I click on "free flight" or any mission I get a "FSX has encountered a problem and needs to shut down" error. It goes on to say that there is a "data execution prevention" problem and the program is being shut down to prevent harm to the computer. I uninstalled Acceleration and everything is fine. I uninstalled FSX and reinstalled everything from scratch-same error occured when Acceleration was installed. I have also tried changing the Vista settings so FSX runs without DEP active but it won't let me.