Mrbib2000

Cura 5.0.0, my viewport is not working. That is, I cannot zoom or rotate my view. I can rotate objects (with the rotate tool). I can right-click and choose from the menu. I have uninstalled, reinstalled, reinstalled an earlier version. Nothing has changed. I can still bring in stls and slice them, etc. I just can't get the view to change. Selecting a fixed view from the bottom buttons highlights them, but the view doesn't change. The same with the view menu choices.