MathType, installer doesn't work?

I have OS X version 10.6.1. I run the installer, (it's for the 30 day trial) and it says "Searching iMac 2" (my volume's name) and it stalls, and I have to force quit it. What gives? I really need to get it working, does anyone know if it's related to the installer? (I tried it on my other mac, same problem...though before I had it on Leopard 10.5 no problems).

Kindly appreciate your help fellow Applers.

Bender.