ehehe thank you!!!!! ..
perhaps I'm wrong... I repeat and ... nothing..
probably I set hypershader in a panel when i have it in another panel too and so the problem is in the other panel now... ...

Hi to all!!!
I'm new here!
I'm italian so excuse me for my poor english

I 'have the same problem.
But I find the real Solution!!

It 's not a graphic drivers problem but a bug of maya
Seem...