trying to set up prince for my production environment as a final test before possibly buying, and i'm having some issues. everything appears to work in the dev environment:

Development Environment:
OS: Fedora 9
Prince: Prince 7.0 beta 1

Production Environment:
OS: CentOS 5.4
Prince: 7.0-2

Source HTML:
<p>foo!</p>

If I do the following:
prince foo.html -o foo.pdf

It works fine in development and generates a PDF. On the production system I get the following error:
prince: warning: no glyphs for character U+0066, fallback to '?'
prince: internal error: no fallback glyph for character U+0066

Any thoughts?

turned out to be a font issue, as per the troubleshooting page.

installing the microsoft fonts fixed the issue. however, it appears to work on my fedora system without the microsoft fonts. this means there is some combination of linux fonts that appear to placate prince. shrug!

Prince will fallback to the DejaVu fonts if the Microsoft fonts are not available. This behaviour can be configured by editing fonts.css in the lib/prince/style directory.