Rachelle (she of the excellent Turntable Community site) has this update on some of today’s problems when running tt.fm on Chrome, with TT extensions enabled.
Due to recent code updates, many extensions are no longer working. TTExtended, while functional, causes the user to be unable to use chat. TT+, same problem. Turntable Plus has fixed the issue, however, and the newest version of that can be downloaded at http://turntableplus.fm/downloads/Turntable_Plus_v0.0.29r1.crx