Hello again,
I found the script I was looking for here: http://www.playonmac.com/en/app-1799-Age_of_Empires_II__The_Age_of_Kings.html
And as I was suspecting, the script is not programmed to handle the layout of the Ubisoft Edition. The following shows the layout of the Ubisoft Edition. Files under FR/SP/UK are basically the same as the DE files.
.
|-- AOE1
| |-- DE
| | |-- DIRECTX
| | |-- DOCS
| | |-- GAME
| | |-- GOODIES
| | `-- SYSTEM
| |-- FR ...
| |-- SP ...
| `-- UK ...
|-- AOE1ROR
| |-- DE
| | |-- Docs
| | |-- game
| | |-- Goodies
| | |-- Patch
| | `-- Sampler
| |-- FR ...
| |-- SP ...
| `-- UK ...
|-- AOE2
| |-- DE
| | |-- DIRECTX
| | |-- DOCS
| | |-- GAME
| | |-- GOODIES
| | `-- SYSTEM
| |-- FR ...
| |-- SP ...
| `-- UK ...
|-- AOE2CONQ
| |-- DE
| | |-- DOCS
| | |-- GAME
| | `-- GOODIES
| |-- FR ...
| |-- SP ...
| `-- UK ...
|-- GAME
| `-- AVI
|-- Manual
`-- Music
Adapting the two lines in the script that deal with checking if the right CD/DVD is present, I was able to install and play the game as expected. If you need more information don't hesitate to ask.