Manual Staff Visability dialog opening problem

I have been using Dorico 4 happily for some time now but suddenly, the manual staff visability dialog will not show on top of the score. I can see that it has been called by observing the small thumbnails on the taskbar, although the visability dialog window is blank. The behaviour is the same as if the dialog was open on the score - ie. I cannot press any mouse button without getting a warning ‘dong’. The only way out is to press the little x in the top right of the taskbar thumbnail.

I don’t have any answer for you but welcome to the forum, both of you!!

Welcome to the forum, Keir. Out of interest, do you find that the separate Mixer window and the pop-up Transport window look OK, or do they also open as blank windows?

Or is the issue that the Manual Staff Visibility dialog is actually opening off screen?

Thank you Daniel for your prompt response.
The separate Mixer window and the pop-up Transport window both open as blank windows. However, the Condensing Change dialog opens as normal.

Thanks, Keir. I guess you are experiencing the same problem as the user in this thread:

As yet we’ve been unable to get to the bottom of the problem. The first thing to try is to update your graphics card drivers. We think the issue is connected to OpenGL/Angle and a potential incompatibility with the drivers on that system. I actually have some more troubleshooting steps from a colleague in our development team to share, so please check that thread for more things to try.

Thanks Daniel. I’ll carry on working through the list - no change as yet. Possibly of interest is that F4 video popup now causes whole program to Quit.

It might be useful to see the crash logs produced when Dorico crashes in that circumstances. Can you do Help > Create Diagnostic Report and send me the resulting zip file? If it’s bigger than 4MB (which it may well be) you can send it to me via WeTransfer to d dot spreadbury at steinberg dot de.