asterisk users - Jan 2006 - asterisk fax to pdf, blank pdfs?

Hello all, I'm working on asterisk fax>pdf/email & have a problem. I
can see
that the faxes are received (via the cli) and I get the fax pdf in my email,
but they are always blank, any idea what is causing this? I'm using AAH 2.0
& have installed the fax/pdf (via install-pdf from the command line). Any
ideas?

Thanks

Dan