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I am not from Laminar Research; just a flight simmer from down under.
The XP11.40b6 (beta) version you have is well out of date. The beta versions went to 11.40b12. which has now been officially released as XP11.40rc2.
Update your system to the current version to ascertain if your problem still exists.
If it still does then I would also suggest you attach your log.txt file so that others with a greater knowledge base than me may be able to determine what your problem is.
If you don't know how to attach the relevant file have a look at the following link from Greengolfer15 found at https://questions.x-plane.com/?qa=blob&qa_blobid=17830136656522860642
If you are not a long term experienced X-Plane user you should stay away from Beta versions as they can cause problems with your system
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