I need some help installing Math. I've got everything installed per the instructions and I'm working down the Mac OS X special instructions. Everything seems to work correctly individually until I try to use a Wiki page. I have a simple one-line test <math>a = b</math>

*Failed to parse (PNG conversion failed; check for correct installation of latex and dvipng (or dvips + gs + convert)): a = b*

latex, dvips, and gs are definitely working right. Convert is in /usr/local/lib - is that correct?