I know this thread is a bit dated, so sorry for poking it.
I purchased the ATsimulations AN-2 last week, and installed it outside the P3D installation folder, using the xml method.
Unfortunately I am not getting the message from P3D to accept the ats_an2.dll to load.
This has resulted in the VC disappearing a few seconds after loading the aircraft.
When in outside view from the front there is a large black square drawn in the full length of the wings from top to bottom. You don't see that when looking from the back.
I have reported it to ATsimulations, and Andrey has tried to resolve the issue with me, without success.
Has anyone been able to get this ugly duck to work outside, installing it outside the P3D folder?
I am on P3D v4.5 and use these instructions for the install:
https://www.nzfsim.org/fsx-p3d-tweaks/add-ons-outside-p3d-root/
All my other airplanes work just fine using this method.
I just like to be able to update/re-install P3D without having to uninstall and re-stall add-ons.
I really hope someone has a suggestion.
Happy flying,