continued dhtmlx installation failure

I checked paths and filenames, and originally thought it might have been the same problem.  As far as I can tell, it seems to be ok for: with a copy of the event XML file.

It is according to internet explorer line 23, char 3, Error ‘scheduler’ is undefined.  This line seems to reference the following statement with an editor:
scheduler.config.xml_date="%Y-%m-%d %H:%i";  Is there a missing javascript library or webconfig file that I might need? Am I missing something basic?  Any additional thoughts?  It seems to be a nice script if I can actually get it working.


The only situation when such error can occur - js file was not loaded on page
It can be caused by incorrect path in script tag, which referencing dhtmlxscheduler.js