[James Dilworth]

Same problem.

I solved this by :

Going into the BBPress Plugin settings
Check Auto Role : Give everyone default access to Keymaster role. (Still available here)
Update
Change it back to the way you had it.
The Keymaster role should now be available for individual users again

[James Dilworth]

I solved this by :

Go into the BBPress Plugin settings
Check Auto Role : Give everyone default access to Keymaster role.
Update
Change it back to the way you had it.
The Keymaster role is now available for individual users again

[James Dilworth]

Funny. BBPress need to remove those filters on this forum too. When I copied and pasted your example, I had to go back and remove the fancy quotes.

Anyway, found the solution :

When removing the filter, the priority has to be the same as when the filter was added. The filters are added in : /bbpress/includes/core/filters.php with a priority of 3.

So, to successfully remove those filters from functions.php, add in the priority :

remove_filter( 'bbp_get_reply_content', 'wptexturize' , 3);
remove_filter( 'bbp_get_topic_content', 'wptexturize', 3);