[ogg-dev] oggz-merge / oggJoin with files created with oggCat

[j at v2v.cc]

hi,

trying to join audio and video tracks that have been itself composed
from several ogg files with oggCat, i get a file that does not work.
that happens both with oggz-merge and oggJoin.
the files produces by oggCat look ok according to ogginfo / oggz-info /
oggz-validate, they also play fine in all players.

anyone got an idea what could cause that problem?
i can put up some sample file if that helps.

j