Sometimes bitmaps in materials are black

I am having a similar problem. Can anybody from MCneel offer any help with this? Sometimes I close the program and reopen and it works, but I can’t count on this when I’m have a tight deadline for a rendering. I have been trying to sell my company on switching our whole team to Rhino, but it is difficult to argue for that when I have these unexplained glitches.

Is this still happening?
I can’t tell if this is a display driver issue or something else.

If this is still happening, open your Notifications panel and see if there is a recommendation to update your display drivers.