Dave did help out in the end. Although I will give a fair assessment, Who ever does purchase this theme needs to find out if their extensions are compatible or not. Maybe more needs to be a better explanation on the main sales pitch about this theme that only themesplat extensions work with these themes. That a core file changes a lot and does complicate things. But that is his business model I guess.
But he did help fix the problem I was having in the end.
This is a great theme and the author is AMAZING. He fixed some issues I had when I installed it, and then for some very reasonable fees, was able to address some issues plaguing my site for about a year.
I would highly recommend working with him on your PHPBB site.