[bug .86] Long delay for defending with a mounted unit.

This was reported in .77, and supposedly fixed, but I just saw it again.  When you click the defend button on a mounted unit, there is a delay of about 30 seconds, or so.  This is long enough for the user to feel like the battle has hung.  Derek told me in a previous post that this had to do with some missing animation info, and he said it should be corrected, but I am still seeing it in the current version.