AoE 2 - Mod problem

Hello, I have AoE 2. I'm trying to play Age of Chivalry - a mod version of the game.

The problem is, along w/ other mods for AoE 2 I download, that I cannot seem to get the mod to work.

When I attempt to play, I get this message:

I'm, btw, using Windows XP.

 

Your anti virus software might of deleted the .exe or it might not of gone into the wrong directory.

 

I'm sure it's what Pro-Consul said. It may also be a verification test that failed (like file size or binary hash). This may mean you have the wrong patch, you patched in the wrong order, or the patch is just not accepted (often a virus).