The new patch

Sorry if these questions have been asked before but I couldnt find them.

What files in the data folder do the new patch modifiy? as none of the folder register and modification since may. I made some minor alterations to one file, could that have blocked the update?

Also when ever I open the game I see the 1st screen, the 'empire total war' in silver with blue edging but the game doesnt get any further and just crashes. Could anyone help?

Thanks for you help.

(could someone change the name to make the threadtopic more clear, thanks)