In the past few days I have noticed the strangest bug/problem with Age of Empires II. For some reason, whenever I play the computer, it won't attack me or build any buildings besides watch towers. Even on the hardest difficulty setting and despite the game type, no matter how many games I play, the computer just won't build anything besides what is included with the map at the start of the game and won't make any military buildings, units, etc. All it does is build more villagers and build watch towers from time to time. It's really annoying since now I can't play any challenging games with the computer since I can end up defeating it in a matter of moments with only a few knights. Has anyone experienced this problem before? Any ideas what happened?