zCore Hues is the conflict (or was for me). If you remove this file from your Community Folder the cockpit should return.
I placed it in a new Add-on Linker folder named 'Liveries' (with any other livery files that use it). When I need it, I will activate the folder from there so it will not confict with my A350 custom livery.
That is what worked for me anyway.
Good luck!
Nate