hello ,
recently , i was doing a long flight with multiple stops , with my PMDG 747-400X
i've landed at my first stop and take off again and when i was descending to the next stop , i just looked out the aircraft and FSX has stopped responding with fault name : DSound.dll
Afterwards , when i was trying to open my Simulator , a message appear :

if i choose yes , a fatal error will appear with fault name : PMDGoptions.dll,
if i remove the PMDGoptions.dll from dll.xml , FSX will work fine , but PMDG 747 wont work
i've even tried to delete and remake dll.xml , but no succes
i hope you can fix my issue , thanks in advance

Please include your full name on posts in the PMDG forums, thank you.

 

You probably have a problem with your dll.xml file.  Try running PMDG installer and selecting REPAIR,  Please notice the there is a sub-forum for each product including the B747 and you'll find this problem discussed many times using search.

 

If all else fails you can submit a trouble ticket at PMDG Product Support.