Hi Umberto,
Okay, I take your point and can only apologise for inadvertently introducing some confusion into this thread. However, and to be fair, the title of the thread only mentions “addon Manager crash on exit p3d 4.2”. There is no mention of api.dll although the thread did focus on this faulting module and you found a solution which, and unfortunately, was not mirrored on my system and those of several others who have posted.
As I stated, I have moved on to Prepar3D v4.3 in the earnest hope that the api.dll issue was resolved and, indeed, that does appear to have been the case as my crashes on exit of the sim no longer implicate this file but, instead, that of another. So, I submit to that extent at least, my post regarding faulting module ntdll.dll remains perfectly valid within the context of this thread. Okay, perhaps I’m being overly pedantic but, hopefully, you see where I’m coming from and why I felt it was reasonable, in the first instance, to continue posting in this thread.
Your kind offer to involve me in a TeamViewer session sounds interesting. I have no experience of using this facility so some guidance will be needed. Should I go ahead and install the TeamViewer App and what information is needed to facilitate your access to my PC? I reside in Scotland, UK. Perhaps we should continue this conversation via PM?
Meantime, I’ll try uninstalling/reinstalling GSX and see whether this makes any difference.
Best regards,
Mike