i see all black in 12.08.20.01
ah ty it fix now
Thank you Sahkolihaa, that seems to have fixed it for me. Hopefully the OP comes back and checks for it too. The property is RenderGLCoreProfile.
Inhandra, it sounds like you've got the core profile enabled, which is now broken due to changes in 3.4.0. Check RenderCoreProfile (or something along that line), set it to FALSE, then relog.
What is really interesting about this, that I've noticed on mine that goes all black, is that texture LOAD IN OK. I can see things like the walls of my house and my furniture just fine as they rez in. But, once the texture has completely loaded, it turns black. The only thing it doesn't effect is the sky.