Or I am dong something reeely stupid. You have checked out 'sydb-occurs2', yes? (As opposed to 'sydb-occurs', which is most certainly not working right.) Another difference: I was using old commandline `roma`, not current `teitorelaxng`. I will give the latter a try after my meeting which starts in 3 mins. Are you using the P5/Test/testerrmav.odd as an input file?
Nope, I definitely have installed Syd's branch: I cloned his branch, did a make install in it, and then ran teitorelaxng (etc.). Still not getting the good stuff you are. Checked that what's in my /usr/share/xml/tei/stylesheet is indeed the same as what's in syd branch, and different from what's in the current dev version of Stylesheets. And it is. I am forced to conclude either you havent updated your branch or I am doing sonmething reeely stupid.