Wings 3D freezing when trying to tumble camera

[esuby]

Try the workaround Camera steals focus in Preferences/Misc with luck that fixes the issue.

Many thanks dgud for your suggestion. The 'camera steals focus' work-around in preferences/misc does indeed stop Wings freezing! I have also set the 'camera moves and interactive commands are jumpy' work-around because the camera was jumpy. Now I can get the camera to tumble although I can't control the orientation finely - whichever way I mouse the mouse the camera cycles through a loop so that , for example, the end of the X-axis sketches out a figure-of-eight in space. This, however, should be good enough for my current purposes. Many thanks for your help!