Quote - I would check how much virtual memory you are allowing on your system. and try sreed instead of opengl. (right click in the preview window to change it)    Animations suck up a lot of resources.

What settings do you have for your screen ?   the color setting mainly. 32 bit or lower.

LOL.... Its the opengl caused my preview render to crush in middle of process. So i just changed to sreed!! thx, now its works normally. And, i realize my virtual memory was only around 450 of KB. Does this consider very small???