Board Thread:Support Requests - Getting Technical/@comment-35301431-20140823011852/@comment-168424-20140823203101

Those templates are scary. No wonder you want to use sub-templates.

The first thing I would suggest is stop using non-alpha characters in your parameters. Not sure how this helps, but params starting with numbers or having weird characters runs the risks of parameters not working at some link in the chain.

Looking at your templates, there doesn't seem to be another obvious reason why sub-templates wouldn't work, but your templates are so overly complicated, you should use sub-templates just to make things more readable. I would start by making a sub-template of your video-icon links and try getting that to work inside your Derivatives template and then try to get multiple Derivatives templates working in another template.