[@netweb Keymaster 10 years, 3 months ago]

The “Notice: bbp_setup_current_user was called incorrectly.” will be caused by either your theme or a plugin.

Try switching theme to Twenty Fifteen to see if the error is fixed, if not deactivate all your plugins except bbPress and then reactivate each plugin one-by-one until the error appears again, then you’ll know which one is causing the problem.

bbp_setup_current_user was called incorrectly