You misunderstood what I was suggesting.
Those controls load some resources like .css files and .js files.
In your browser source, click on the links to those calendar resources (if they're clickable ... if they're not, then copy their path and re-assemble the URL and paste it in your browser) to attempt to open them in the browser. They should show up as just the plain-text content of the files.
But if you get an error from the server (ie: 404 Not Found, or 403 Forbidden) then you're either missing the files from the server or there are permissions issues preventing access to the files, or your apache configuration and/or custom .htaccess rules are preventing access to them.
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