[acred99]

What about editing air.ini? Did you do that correctly?
What buttons file did you use? Does one come with those aircraft, or are they included in Aircraft Installer 3.8?

What do you mean by the "almighty buttons folder"? There is a buttons file. You should have only one, and it should be located in ...\files\gui\game\

What do you mean by "another one too"?

I used a few buttons files, the one I have needs to be updated I think ? The Almighty buttons file is an option with the download of the Bf-109 E4's the author did say at your own risk ! I think these aircraft crashed the game. Its a lot of stuffing around to put these aircraft in, so I would like to get it wright the next time I try !