Ahhh, but you paid money for it, therefore - it is an "upgrade"... Sorry, bad joke...
I've got v1.3 (for some strange reason), v1.4 and v1.5 all on my hard drive. I can try tomorrow with mine on that EastAsiaCampaign file. Seems to me, that there's a bad call in that thing, but I don't remember what, whether a ship or plane or objective or what... We found that while updating things in Fall of the Rising Sun Ultimate. I just figured it was from the mod...