[fixed] Wings_crash.dump - function_clause

[Hank]

Hank what camera mode do you use?
Is that a clean wings-2.1.6 install?
OS Windows/Linux/Mac ?
Are you using any other software when modelling that might want to steal the mouse input?

Camera mode: standard, I just turns off orthographic view
clean W3D 2.1.6, but I got also 1.5.4 / 2.1.5 and some Mlab version too
OS: Win 10 but also previously tested in Linux Mint and got the same problem. I can confirm the status in Mac too, but if Win and Linux has the same symptom, is it worth?
In W3D modeling I jump very often between various windows => Atl + TAB (web browser, music player or 3rd part CG programs, like Blender or GIMP) - I exclude 3rd party program issue. For yesterday test were turned off and did not get the problem.
Furthermore, I change very often 'quick smooth preview' => Shift + TAB
And Tweak with slide option is turned on all the time.

BR, Hank