i have some problem while i click the green arrow button to see how my animation looks like - everything from my view channel disappear, but when i click "stop" button it appears normaly. Everything was fine yesterday, did i click something ? what can be the cause ? As i said, all is fine with the animation it's just i can't see it after clicking start button, what i can see is just gird... then i click stop and everything is in the right place..
possibly, the default behavior is to replace objects with a wireframe box outlining the volume occupied by the object if the frame rate gets too low. You can try going to a lower (faster) display setting, if you are using Shaded Gouraud, try Quick, Constant, Hidden Line, Lines and see if that helps. Faster system/graphics card can help too but there is always a limit.