Guys;Please see if someone can help me.I've been having some CTD when I fly the MD11. Generally, the CTD is related to file ntdl.dll. I've searched here and on other sites, and I know it's a Windows problem, not a problem of PMDG.But that always happens when I fly the MD11, just my favorite airplane. If I speed up the time, so I'm waiting for the CTD. I have the PMDG 747 too, flying a lot with him, and nothing happens.I use the UT2, RC4 and my fsx.cfg is tweaked by Bojote. I use W7, 64bit and the error is related ntdl.dll in syswow64.I'm doing something wrong? Is there a way to, if not stop it, at least reduce the incidence of error?

ntdl.dll is a windows file non-specific to PMDG. You likely need to repair the .dll or run check disk.