Hi @Snesra, you could try reinstalling that specific aircaft (and any others with pink textures). You can do this either by uninstalling them in the CONTENT MANAGER and then reinstalling, or by going into your Official folder and deleting that aircraft’s installation folder causing it to then be reinstalled the next time you launch the sim.
Let us know how you get on 
Edit: I’m looking up which folder cointains the menu items etc.