why cant i see the particles?

I can see them with alt a but not in the picture!
ver 2.47


toolsSTUMP.blend (757 KB)

The problem is your original chip1 object does not render. Fix that an all should fall into place. I deleted the chip1 object and added a simple cube, called it chip1 and everything started working.

Your scene scale is kinda wack too!

thanks very much Atom