I tried to install the mod, but when I do it failed before it even started loading and flashed this message on the screen:

Installation Completed

Broken Crescent ver 2.02 has not been totally installed because of the following reason:

Cannot create the following file:
C:\Program Files (x86)\SEGA\ Medieval II Total War\bc.$$A

You will have to run this install again to completely install Broken Crescent ver 2.02.

This message pops up and I tried to retry again, but it was not working. If anybody could help or give some advice I would really appreciate it. Thank you!