The issue is rather simple. You have FAR installed, DD expects control surfaces to be using the FAR module ("FARControllableSurface"). However, there are a number of control surface parts that have not been patched and still have the stock part module instead Note: Most of the below list just haven't removed the stock module (they should be). The AirplanePlus parts however do not have any FAR replacement and this is what's causing DD to flip its lid AirplanePlus/Parts/Aero/elevonhalf/
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