If you goto steamapps->(Username)->Mount&Blade->Module-> Hegemony
You will see a file called... Dialog_States I believe? Anyways, press ctl+F and type in the error message you received when you tried playing the game and it crashed. Next, replace the warning with "You did not take the time to notice the version of the module necessary for the mod, nor did you take the time to read about it on the thread, nor did you bother to makes sure you had all the prerequisites required for this mod"
Then when you restart the mod it will crash but it will tell you a much more informing crash info.