sorry about the delay, wanted to run multiple test just to be safe

taking beta5 MP and using the MP unit prod from beta8, (removing all entries for factions 1 to 7 and 25 & above),
and including the "new" unit prod in a the beta5 mp startpos,
AND NO other updates
desyncs every time

the game does not care that the unit prod "calls" the wrong animation files, and thus what you see is all messed up,

it looks like there is an error in the unit prod file for MP beta8
and that is not my area of expertise,
i cannot even imagine an easy way to fix it, you would have to rewrite the unit prod, maybe by simply adjusting the beta5 unit prod and not removing the extra entries for crusader/muslim/viking units??

i am going to take a break now, if you rewrite the unit prod soon i can test it tomorrow,
(i am uncertain how long i can keep this lan in place - other people normally live here and it's rather crowded with 6 PC's up and running, wires, cables and extension cords all over the place - a few days at most, everybody will be home by wednesday evening and then we will need the space back)