qtvcp-hd versa probe crashes ui - solved

No, its kde on x11. With xfce4, it does not start at all.

rodw wrote:

Thats showing an OpenGL out of memory error ...

Are you using proprietary AMD drivers?
That will not work anymore with LinuxCNC, uninstalling them works.
Had the same issue two weeks ago with a Ryzen 5 5500U.
Still works properly with Radeon RX 6800XT and proprietary drivers.
I would venture a guess that any Ryzen with G at the end and proprietary drivers will not work, but that requires more testing.

Ok, the "start up error" is gone. I had a "nvidia quadro 600" card with the nouveau drivers installed. Now using the onboard intel, opengl errors are gone, thanks for all your tipps. But the versaprobe crash persists. See the terminal log.

Earlier you said you had installed 2.9 but the log shows 2.10 (master branch). Did you change?
I've been using v 2.9.  I'm not sure if  cmorley is keeping 2.10 in step with 2.9 at every change (there have been a few the last week).
I would recommend you install the 2.9 Debs from the buildbot I shared earlier.
 

This is now with the buildbot version you mentioned.

can you find this and modify it?

File "/usr/lib/python3/dist-packages/qtvcp/widgets/simple_widgets.py", line 708, in paintIndicator
p.drawRoundedRect(topLeft.x()+(self.width()*((1-self._w_fraction)/2)) + self._top_edge_offset,

to:
p.drawRoundedRect(int(topLeft.x()+(self.width()*((1-self._w_fraction)/2)) + self._top_edge_offset),

No, did not help

Well it did but showed another error.
Try replacing the line with this:

Bingo!!!!
Thank you so much.

excellent. I will incorporate the changes - thank you.