Question on Step 4 of the APT install instructions

looks like a hardware compatibility issue with vtk. did you check the compatibility per the docs for opengl?

No I did not.
Honestly I thought that running update and upgrade would have taken care of that (unless the hardware itself is not compatible). I'm reading about Mesa right now and will probably attempt installing/loading that.
Thank you very much.
Jim

the hardware may or may not be able to run the correct version, impossible to know until you check. this is pc hardware for graphics. qtpyvcp uses VTK for the back plotter which is different than the stock linuxcnc plotter. if the hardware isn't compatible, a graphics card can often times resolve if you want to use PB, otherwise QTDragon may be a better fit.

For the time being Ive abandoned Probe Basic. I did order a graphics card that should help/fix the hardware issue and I'll try again later on.

I'm still learning, but I've got a 90% configured instance of qt_dragon up and running and I think I'll like it too- though I do like the looks of Probe Basic.

Thanks.
Jim

no worries, many flavors make the world more interesting! whatever works and accomplishes your goals is A-O-K in my book!