Mandatory information about my setup:

Have I searched the tickets before posting? Yes
Have I searched the forum before posting? Yes
Have I read the documentation before posting (which pages?)? Yes (all)
Joomla! version: 3.3.6
PHP version: 5.3.26
MySQL version: 5.1.70-cll
Hotspots version: 4.0.6
Direct link to the page that shows the issue: http://www.taichicultivation.net/index.php/tai-chi-class-maps


Description of my issue: I have 4 hotspots for 1 category in a menu item. I see the map but I get a continuous "Loading data" and none of the hotspots appears on the right or in the map.
I am getting an error in each of the hotspots locations form (attached). That may be the problem but I don't know how to correct it if it is: Fatal error: Call to undefined method JDocumentRaw::addCustomTag() in /home/taichicu/public_html/plugins/system/mredirect/mredirect.php on line 36
Location Details

Thanks for your time,
Wayne