Here texture works fine on my IMac. Gonna check it on a different machine.
I can reproduce the OpenGL errors deleting meshmixer.ini.
Now the fresh MM starts without a printer selected.
The OpenGL errors do not happen at StartUp or creating a scene (e.g. opening the sphere) but as soon as you navigate the cam the log shows these errors (also one does not see it with a single object yet). As soon as you duplicate it and navigate the cam again, the error happens on the duplicate.
As soon as one sets a printer active, this fixes the issue for the current and following sessions.
BTW: Some chance to define a different printer than the offered?
For the Volume/Surface toggle, that was disabled on purpose. Volume brush has some awareness of Complex objects, but Surface brush does not (yet). Even for Volume brush it is kind of flaky...
SurfaceBrushing on Complexes does not seem to be that bad to me. But I have the Keyboard to switch to...
Vtx painting now works fine here too. ATM I'm not able to reproduce this wired behavior. Maybe this is related to the No-printer-issue above - (which also does different crazy actions as showing the SELECT brush as a green hexagon on the surface) ?