747-400X Problem need help

[a3ifs40 0]

Good afternoon I am having a problem with the 747-400X in FSX with Windows 7 Home Edition 64 bit. When flying all of a sudden I get a freeze up in the moving map display from the captains view. I have done about 20 plus flights on long range missions to Africa, Asia, and the Mid East. I have tried it with both flight planner and no atc in use, also I have done the flights with the windowed view and with full screen view. I have used both weather and no real weather.What happens is the following I will be going along at altitude and all of a sudden the moving map display will freeze in the left hand seat, I can swtich to the co pilot and everything with be fine except the plane will start to go off course and down to the right on left, now sometimes when I switch back all 3 main displays will be black, sometimes not. then suddenly the left display will show fine and attempt to get me back on course which will work fine. only twice since i have started the research has the flight CTD so most of the time I can continue the flight.I do not have any add ons installed except for EGLL scenery, VTBS scenery and the PMDG 747-400X I hope this helps someone who can give me advicemy system is the followingGateway FX530S Windows 7 OS 64bitIntel Core 2 Quad Processor q6600 2.4GHz, 1066mhz FSB 8MB cache 4.0 GB RamNvidia GTX460950 Watt Power Supply19 inch Monitor ThanksIan Snow

[sheepfu 3]

When the moving map locks up, try pressing the "A" key and cycling through the views. See if that kicks it back into gear.