Win10-64, P3Dv4.3, CRJ1.2.2.0   Seems the MFD Range goes as high as the 40-80 nm scale. If I mistakenly try to go above this limit P3D becomes "Not Responding" followed by a CTD. Repeatable. Sometimes I rotate the mouse wheel in the wrong direction when I want to lower the scale. I wonder if it's possible to trap the error before the CTD?