Thanks Stephen,
I have just done that and found that two of my plugins are making bbPress throw a wobbly.
All-in-One Event Calendar by Timely
the Former I can live without however the calendar is a must for the site. is there a work around or do I need to rethink the forums for now?
The forums work on the front end and can still create/reply to topics but it is the settings options that are disappearing on me in the backend that is a concern.