Works fine for me (
here), you just have to keep in mind that with the latest version smarty you can't use {php} or {include} tags in template files.
I see in the stock code there is a new scripts/sample.inc.php for 7.6.1 but the other support files were never created. as in prior versions.
I have had an article on the
UBBWiki "
Creating a New UBB.threads Page" since July 30th, 2016.
Do I use that for the wrapper pages instead of what is in the zip?
If you want to completely develop your own plugin from scratch, rather than have one plugin you can wrap many systems into, sure.