Hello me again - i found this site:
http://www.xlr8yourmac.com/archives/mar07/030807.html
with these steps...
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Hi Mike, I heard back from MacSoft about the Age of Empires III problem. They confirmed that it's a problem with the QT7.1.5 update on 10.3.9. They said that they're working on a fix, and gave me a workaround to get it going. I noticed later that they also posted it on their support site:
http://www.destineerstudios.com/support/aoe3.html
" Problems with Quicktime 7.1.5 and OS X 10.3.9
A recent update to Quicktime from Apple has prevented Age of Empires III from starting up on systems running OS X 10.3.9. We are currently working on an update that addresses this issue, but the instructions below will allow you to play Age of Empires III on your Macintosh in the meantime.
1. Locate the Age of Empires III program on your computer. 2 . Control-click or Right Click on the Age of Empires III icon and select "Show Package Contents," then open up the "Contents" folder, then "Resources," "GameData," then finally the "avi" folder.
3. Go to the File Menu and select "New Folder."
4. Drag all of the files in the "avi" folder into the folder you created.
5. Close all of the windows and Start Age of Empires III.
Unfortunately, you will not be able to see the end of Act Movies in game until we have an update for Age of Empires III. However, it is possible to watch the movies if you navigate to the folder that you have created in the steps above. It will be necessary to drag the movies back into the "avi" folder after we have an update for the game that addresses this issue.
Thanks
-Brian
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hope this helps!