I observed a syntax error in the graphical installer. I hit this on an RX2600 (HP ia64) in graphics install mode. Unfortunately, I didn't have a serial console near by to cut and paste. This was in my current mirror of the ia64 development tree for fedora. The error doesn't happen in 'text' mode. The syntax error reported by anaconda is in kickstart.py line 780 elif arg == "... The arrow points to the f in elif.
Paul fixed this in CVS a day or so ago, we just haven't done another build since.