Thanks for confirming!
Not really - I have more than one copy installed, and they can't all be called "X-Plane 11" and reside at the root of a drive. XP12 latest will not have a default folder name "X-Plane 11", so...
This issue btw. does not only exist for X-Plane folders not being located at the root of a drive structure, but also for alternate X-Plane folder names. My X-Plane is installed at
D:\XP11
something the lua script didn't like. Hard-coding this path in the same way XPJavelin described fixed the CTD for me as well (B738.anav.lua line 224):
--xplane_file_path = find_dataref("zibomod/Xplane_Path")
xplane_file_path = "D:/XP11/"