Render problems!!!!!

I’m running Blender 2.47 on a mac.

My scene is a boids particle system. Everything is fine when I render a still image. But when I try to render a sequence, Blender quickly runs through the frame numbers in the render window but doesn’t really render anything. Only black frames.

My settings are 1280 by 720 png image sequence, but I’ve tried quicktime as well. Any ideas?

I think I’ve figured it out. The problem occurred when I had the “Do Sequence” button activated. I deactivated it, and it seems to be working. Does this sound like the correct solution?

http://wiki.blender.org/index.php/Manual/Video_Sequence_Editing

well, if you had blackness in the VSE, then with Do Seq enabled it would render blackness