Yep. That worked. Editing the template now to match my theme.
Ah, found the problem.
Your plugin assumes that permanent FTP access has been enabled. When I was first installing this plugin, I didn’t have it set up so at activation it didn’t move the wpbb-template.php file to my current theme’s folder.
Now that I know, I’ll continue with the forum.
Reinstalled with permanent FTP access enabled and works fine.
I found that, with my current theme, if I move wpbb-template.php to my theme’s root and rename it to page-forums.php, it will load the template.
I think I’ll just try that and see where it goes.