hi, me again I looked into this some more and it seems to me that if PropertyList would check attribute namespaces before trying to convert them this would be handled nicely (i figured out that fobj has a reference to the responsible element so accessing its namespace is easy).
I might be going out on a limb - maybe logging unknown attributes is the right thing to do(?) But why would FOP even consider attributes out of a non-fo namespace? well, here's a patch that does the namespace check just FYI. Looking forward to hear what you guys think. Regards! Nils