Incompatibility with X-Plane 12.4.1
At this moment a number of our products are not yet compatible with X-Plane 12.4.1 and will cause crashes. These products include:
HotStart CL650, TorqueSim products, RealSimgear DA40, and a few others.
Please do NOT update to X-Plane 12.4.1 if you depend on any of the above. We will release updates accordingly and let you know in an e-mail of their release!