I Cannot Set XML Files to Open With Oxygen

After upgrading OS X to version 10.4.1 Tiger I am not able to set XML files to open with Oxygen when I click Change All in the Get Info dialog. This worked in OS X 10.3.x.

On Mac OS X Tiger you must add an entry to the Info.plist file of the Oxygen bundle. Tiger was released after Oxygen version 6.0 so this change could not be included in the Oxygen 6.0 release. Please close Oxygen, press (Cmd+click) on the Oxygen icon, select Show Package Contents, go to Contents, edit the Info.plist file, add the entry:
    <key>CFBundleIdentifier</key>
    <string>ro.sync.exml.Oxygen</string>
and restart Oxygen. Now you can select Change All in the Get Info dialog to make the association.