"Open the application bundles"? I have no idea how to do this.
Also, when I try to open the folder that appears after decompressing by double-clicking, the game itself launches and then immediately quits with an error.
Download patch for Mac OS X. Unzip file, control-click on it, and select "Show Package Contents". Then open up your dominions application in the same manner and replace all the individual files (not entire folders) in the dominions application with their corresponding equivalents from the patch.