In release version 0.12.0 you cannot use FOP with the commandline XTCommandLine.
This results always in the fatal error "Root element must be root". If you need
XTCommandLine please use the cvs version, where the bug is fixed, or a newer version
of FOP.
The page count (/Count tag) in the Pages dictionary is 0 in PDF files produced by
FOP. Most of the time this doesn't do any harm, but it has been reported to be a
problem with xpdf.
Colour not continued onto subsequent pages, if coloured block goes over page.