Crashing when pressing f1!!! pls help me!!!

[sesenxd]

everytime i press f1 my game crashes... so i cant give the bots commands and its pissing me off pls help me!!!

 

[Vincenzo]

Install this:
http://download.taleworlds.com/mb_warband_setup_1153.exe

Then this:
http://download.taleworlds.com/mb_warband_napoleonic_wars_setup_1006.exe