I'm just going to add this same post here too:
Now both CoW 1.5 and 1.6 crash the moment you start the game, I don't even get to main menu!
This is the error report for CoW 1.5:
Code:
12:16:24.211 [system.rpt] [always] CPU: SSE2
12:16:24.212 [system.rpt] [always] ==== system log start, build date: Sep 5 2014 version development ===
12:16:24.253 [system.io] [always] mounted pack packs/data_0.pack
12:16:24.284 [system.io] [always] mounted pack packs/data_1.pack
12:16:24.321 [system.io] [always] mounted pack packs/data_2.pack
12:16:24.392 [system.io] [always] mounted pack packs/data_3.pack
12:16:24.437 [system.io] [always] mounted pack packs/data_4.pack
12:16:24.460 [system.io] [always] mounted pack packs/localized.pack
12:16:24.487 [system.io] [always] mounted pack mods/call_of_warhammer/packs/data.pack
12:16:25.115 [system.io] [always] mounted pack mods/call_of_warhammer/packs/localized.pack
12:16:29.623 [system.rpt] [error] Medieval 2: Total War encountered an unspecified error and will now exit.
And this is for Cow 1.6:
http://www.mediafire.com/download/uxq3h5cfxhxcylr/M2TW.system.log2.rar
I've reinstalled Steam version of the Medieval 2 Kingdoms, reinstalled both mods and still not working. Yesterday both mods worked and I only had trouble with 1.6 campaign.