Board Thread:Support Requests - Getting Technical/@comment-26541450-20160509055433/@comment-168424-20160509222534

Okay, so I would delete your Familytree template and start again. When you try copying the template and its subpages, make sure to only do it in source edit mode.

Read Help:How to copy templates to your wiki for some help, although it is written assuming the reader is experience with Source edit mode.

Here is a list of all the pages you have to copy:
 * w:c:templates:Template:Familytree - the parent template
 * w:c:templates:Template:Familytree/doc - the documentation
 * You can delete this line after you copy the docs:
 * w:c:templates:Familytree/element
 * w:c:templates:Template:Familytree/element/doc - the documentation
 * You can delete this line after you copy the docs:

It also looks like the first version of the template of your wiki was not copied from Templates wiki.