Excuse my stupidity, but I didn't find any dropdown list on the pagesite you linked.When you choose "previous version" from the drop-down list Steam starts downloading the patch immediately and it takes a second or less (depending on your connection). It's a different Medieval_TW.exe (about 5 MB) so you probably didn't noticed that something happened. Just try to run the game and check if it helps.
P.S. Check your PMs.Could you, please, specify where it is?
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