Advanced Melee AI is made to be used on 'melee' maps only so please don't try to use it on completly custom maps (e.g towerdefence), it will make no difference on such maps. Custom melee maps need to be set to latest patch data. Open the map in the Warcraft editor, go to Scenario->Map Options-> and change "Game Data Set" to "Melee (Latest Patch)". More @Wikipedia
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