Sir I just went threw this ..
Doing a lot of research on this Ntdll. I saw the This Ntdll.dll is tied to a few things and a Did My homework and crossed of the list what was required to get this CTD from happening again , used The avsim CTD guide and reading on the web what NTDLL.Dll id asscociated with
I tested My memorie Using memotest .5
I have My traffic X 5c .. I used the patch that was suggested and the same CTD
I removed the FSX.cfg . same result Ntdll.dll CTD
What I had to do ..
Ran a memory test make sure none of my ram was the culprit Memo5c or something
Completely remove My traffic X 5c . Clean the registry using glary utilites run it 2-3 times .. Removed and traces of My traffic X 5c from the hardrive .. I used two utilities glarysoft and Tweak perfect a win7 Utlity its called TFC . Please See Nicks Bible On FSX simforums forums ( THE FSX COMPUTER ) ..
removed the FSX .cfg and started it with out MY traffic X 5c after the cfg rebuilt I made sure I did the tweaks In Nicks Bible as far how FSX is set-up
Did a complete search in the PC for any traces of My traffic X - used windows system to unhide any files and checked that every file was not hidden deleted and cleaned (OCDEED LOL)
After that.. rebooted computer . located MY traffic X 5c and installed , Installed per MTX5c Author instructions how to install. Started the traffic communicator Did not use Traffic Data base builder ( from SDK ) selected Autum Schedule 2013 and had My in FSX settings Traffic at 30% GA 15% all other set at zero, Boats , Cars < etc airport Vehicles 2@ 1%> ETC ..
I flew in my PMGD 737-600 Navy posidein livery -- from OAK to the deep sea In the North California offshore and back to OAK with No problem.. REX injecting weather and many clouds .
When I got This CTD it was frustrating because I would be trying to input into the FMC .. ( For PMGD 737 a lot pre -prep for a flight ) get to the end of the runway and climb out ok and after 10-15 minuets CTD !! --
When you run FSX . try to make notes of what you added and what worked the last time .. adding a lot of stuff to fsx is bad because the FSX.cfg can get corupetd very easily Try to keep FSX CLEAN .. and you get the results that you are looking for
I have rex at the lower setting an weather gets injected on a 10 min per injection cycle at 1 min injection levels and the area of were weather is in injected 2x2 .. seems to work less hits ON FPS
Hope this helps .. Wish Microsoft would have some forwarded thinking when building this software .. 10 years old now ?