OK Here’s the dish:
Perhaps this isn’t another issue.
I was grappling with the “Call to undefined function __() in…” caper as a few have around here.
Of course, this only occurs when I include WP_BB = true and my wp-config.php
So, without either of those switches all works fine. Without these, how would the setup go as far as cookies and integration are concerned?
As far as templates are concerned, I have no need for any wordpress functions to be loaded in my forums, at least not at this stage.
If you’re getting that error when WP_BB is set, you’re probably not including wp-config.php correctly.
You do not need to load wp-config.php in order to integrate cookies or most anything else.
See https://bbpress.org/documentation/integration-with-wordpress/
and https://bbpress.org/documentation/faq/#integration-plugins