For some reason my attack of opportunity is not working, ive tried to manually attack or wait for the computer to do it, the little symbol to the right that says "attack of opportunity" just spins, but there is no attack.

DRAGON FIRE-AND DOOM Dragons? Splendid things, lad-so long as ye look upon them only in tapestries, or in the masks worn at revels, or from about three realms off...
 Astragarl Hornwood, Mage of Elembar - Year of the Tusk