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Please see the official X‑Plane Support page for help.
Could you please upload a copy of your XP11 Log.txt file for myself and others with a greater knowledge base to look, in an attempt to work out what's going on?
If you're not sure how to upload a file to this post, please click on the following link and view the PowerPoint slides that I have prepared for this specific purpose:- http://questions.x-plane.com/?qa=blob&qa_blobid=7357663259538501618
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