I have seen related posts but this one may be slightly different.
I have been running the NGX on the old FSX for some time along with FS2Crew voice and I have been having a great time with it.
My NGX is the boxed version and I came across the Aerosoft site update for it. I uninstalled the old NGX and installed the new one. I thought it was version D but the aircraft.cfg identifies it as Build 1.10.6461. It could be version D as the weather radar is working.
After running FSX and confirming that the NGX was working okay I started FS2Crew and there was the SDK error.
I uninstalled FS2Crew and reinstalled but the error this time was:
Not sure what is going on here but it looks like I have to go back to 1C and forget about updating the NGX.
Running FSX on Windows 7 Professional 64 bit. DX9.
Thanks in advance for your assistance.