[Roger Coathup]

http://wpmu.org/big-news-for-bbpress-users-a-bbpress-plugin-is-coming-to-wordpress/

p.s. if it just needs you to use the echo-ing version of the function: bp_the_topic_title() as suggested by @hnla, then please report back on this thread, so that we have the information.

I assumed you would have been trying to echo the result anyway. Please post all your relevant code in future