1.) Some animations are spelled differently then what they may appear in the animations list in models.bar file. The list at AoM Punk is fairly updated in this matter, so if your animation doesnt work, this could be one problem.

2.) There are two animations for all units, called idlea and walka. This animations are used to define how the unit appears and walks. If you will notice, the unit appearance changes when animated, so using these two you can keep the appearance of you unit when not animated, same as when animated.

3.) The animations idlea and walka only work in cinematic mode. They won't work in normal mode. There are also some other animations I think, which only work in cinematic mode.

4.) In cinematics, when u animate a unit, either use the idlea and walka for its appearance and walking, or after it performs the actions, set its animation to default. Ohterwise, I have found units sliding instead of walking sometimes.

5.) A good way to see the exact spelling of the animations, if they dont work, is to look in the ES campaign. They have used all the animations in them. Don't worry, u dont have to search all 30 scn as most animation names define in which scn they appear.
Example : jarl_aomsp21aye means it appears in scn 21.

The animations look really nice when used, and your cinematic looks much more detailed that way, as units move when they talk, etc.

Hope this helps

Kumar