No elements show in tree -Solved

Hi All,
After checking out the Construction Template, in the collection of free templates posted by someone else,
I have a weird experience, where the tree only shows the head contents… Meta and suchlike and ,
nothing else.

I downloaded the template, opened as a project and Hey presto … an oddity. I wouldn’t have thought it is REALLY a Pinegrow bug, but any suggestions on whats up?

and here is the Pinegrow view.

any ideas?

ah, SOLVED… bizarre.

It was missing the

<head

declaration at the beginning!
what a dummy! Pinegrow even alerted me to this.
oh well, I shall leave it here anyway as tis interesting that that should break the PG view,