[8FS_Bulau]

I discovered this also last night and it's tied to Zuti's MDF mod and the F9F. If you disable Zuti's MDF the F9F works fine but you'll need a separate catapult mod. Hopefully they'll get it worked out.

8FS is using F9F and Zuti DSMod v0.8 (Final, no RC#) without any problems whatsoever.

And BTW, there is a separate catapult mod. Look for Fireball's Carrier Takeoff Mod, I think it is part of that, which is the mod that ZUTI included in his DSMod.