You have an inconsistency in the naming of: "Class.EasyNavigator.php" with this package (there is also "EasyNavigator.Class.php").
Because of this, the zip files don't work without editing.
It would be good to correct this before more people download and try this code.
Otherwise, the code worked fine.
My only other suggestion is to include code which makes it easy to troubleshoot the code (so that it can be run from the command line).
A quick way to do this is: