i think i found the problem..i used many vraylightmtl objects in my scene..i removed lots of them,now it works fine..
no it didn't escape when i pressed ESC..when i use "Task Manager" for closing the 3ds max,my saved project blows up too :cry:
i have 800.000 polygons or more in my scene..
i think i must buy a new powerful machine..
but i can't understand...2.4 CPU,4GB Ram and ATI3670 is not enough doing for a simple work.. :argh: