asterisk users - Feb 2005 - app_rxfax creating bad faxes? (StripOffsets)

Using CVS HEAD (20050214 with the new jitter buffer) and the latest (0.0.6?) 
spandsp.  libtiff version is 3.5.7, compiled from source.  System is 
Slackware 10, 2.4.26 kernel, no fancy patches and processor is a P4 1.5GHz on 
an Intel motherboard.

Most faxes are coming through fine but a few companies in particular are 
having very poor success faxing to us.  Most faxes LOOK like they'd receive 
correctly, but I get this when trying to convert the TIFF to a pdf:

/var/spool/asterisk/faxin/1108478035.15.tiff: TIFF directory is missing 
required "StripOffsets" field.

What can I do to help debug this?

Regards,
Andrew

> Using CVS HEAD (20050214 with the new jitter buffer) and the latest
(0.0.6?)
> spandsp.  libtiff version is 3.5.7, compiled from source.  System is 
> Slackware 10, 2.4.26 kernel, no fancy patches and processor is a P4 1.5GHz
on
> an Intel motherboard.
> 
> Most faxes are coming through fine but a few companies in particular are 
> having very poor success faxing to us.  Most faxes LOOK like they'd
receive
> correctly, but I get this when trying to convert the TIFF to a pdf:
> 
> /var/spool/asterisk/faxin/1108478035.15.tiff: TIFF directory is missing 
> required "StripOffsets" field.
> 
> What can I do to help debug this?
Over what facility are the incoming faxes arriving (pri, isdn, tdm)?

BTW, spandsp-pre9 is the most current.