PMDG 737NGX Base Package for FSX or PMDG 737-600/700 NGX Expansion for FSX locks up with error message and FSX10 has to restart. When it restarts and you pick the 737 aircraft the process starts all over again. Only when I use pmdg aircraft. 

Full names in the PMDG forums please.

 

I assume you have read the Introduction sections on installing the NGX, and the default free-flight aircraft is not a PMDG.  Start errors like this, if you agreed to trust the plug-ins per instructions, are usually caused by the dll.xml file.

thanks i read up on topic