Comixer 0.6 for both Linux and Mac (Leopard only for now) have been released and are available on the Downloads page.
This is a very minor bug-fix release to address the creation of books greater than 100 pages. It should be good for up to 1000 pages now, which is hopefully more pages than anyone should ever need.
Update: Also works with Snow Leopard 10.6.8!
You may need to manually rebuild imagemagick to get it to work though. There is a problem with libtiff but I resolved it by opening a terminal and typing:
fink rebuild imagemagick
If Fink isn’t working for you, though, you can try MacPorts instead: http://www.macports.org/index.php
