What BAT version are you on currently? Already on 3.3 Pathfinder?
Do not judge in-game bugs, until you are at the latest update level.
Yes, QMB testing is a fickle thing! A great many maps, due to the objects used in the "setup" files for the QMB missions, do NOT work in all the eras and you get this spinning/uncontrollable pink plane error stuff.
Try other maps in such a case, preferably those with the era prefix fitting the part you are testing.
If you have an ATI graphics card, you indeed might need that La Chute fix.
Modding BAT is your own business, it's easily possible if you know what to do. Future BAT updates will bring more aircraft to BAT and will overwrite your modded folders and air.ini lists without warning, so be aware of this.
It is recommended to always have clean latest BAT versions of the four main folders available as backup: #DOF3, #JTW3, #TGA3 and #WAW3
That way you can always fall back to "unmodified" latest BAT condition, before you run a BAT update.