Quote Originally Posted by Ludens
I just played a custom battle of Kart-Hadast vs the Ptolemaic Empire on the Abul Simbel map. I experienced some very odd occurances. The Sacred Band, both mounted and on foot, had graphical glitches with their shields. They appeared correctly from close-up, but from a little further away the graphics changed. It is best visible in this screenshot: the soldiers close to the camera have their correct shield, but those further away show a different one.

Also, Sacred Band cavalries' shield motive shows on their cloaks if the camera moves a little further away.
This is a sprite problem. They have been redone, but not yet loaded into the v.80 test build, so I can't say we've solved this.

Another strange occurance was the ability of my troops to hide on top of the hill I started out on, despite there being nothing there to hide in. Even my cavalry could hide. This screenshots show my Carthagian militia cavalry, that are hidden according to the unit bar. Perhaps there is something wrong with the terrain?
It's not the terrain. There are some *inexplicable* special unit commands provided to a number of the units in EDU. The Iberians seem to be the worst offenders.

Lastly, Iberian heavy cavalry still used the old animations, i.e. they held their lance striaght up instead of putting them on their shoulder. I don't know if this is a problem, since it is a placeholder unit, but I thought you had replaced all animations.
There are all-new animations for v1.5 (alin actually provided most of them in his add-on pack). Can't say for sure these particular ones have been fixed.