I am currently working on an Umbraco site created from a custom package. This package contained some prewritten templates, document types and content nodes.

I pasted some HTML into my master template, but I am unable to load it correctly as I am met with this error: http://i.imgur.com/7P3xmx9.png

Normally this should work fine, but for some reason it won't load the page. My content tree looks like this: http://i.imgur.com/vvbGdsS.png

And my document types tree is structured like this: http://i.imgur.com/UQvyApo.png

I have two templates below the master using its layout. I'm unsure as to why I am receiving this error. I have other sites up using the same package that work fine.