You can now get a small patch for this mod which corrects/adds the following things:

* India can't build catapult range and anything higher now so they always keep archer units.
* Province of India renamed
* Peasants now can no longer be trained
* All mines now generate revenue
* India are now able to build Circus Maximus, and hence Elephants.
* Barbarian units have proper upkeeps
* Illyrian Warrior tga included for those having problems with it.
* Hephaeiston added for Macedon with new trait added (ahem)

Here it is, its only small but corrects most of the faults mentioned:

BKB Alexander Mini Mod Version 1.1 Patch Download Link

It requires a manual install but I've laid the folders out in the order the files should go in so you shouldn't find it too difficult.