All of our templates with name endings 3R or 3R-free are updated to joomla 3.6.
If you upgraded joomla and experienced a fatal error, it may be caused by an old version of Ari image slider, so you need to download the newest version of Ari image slider and install it. After this installation your site will probably work without problems.
To update your template, first you have to save your old template (with your modifications), then install the new version, and the old template will be overwritten. Then you have to apply your modifications again.