Re: Can’t post. Topic turns yellow. Can’t delete.
What version bbPress are you using?
Does this same problem happen when you use the stock theme rather your customized theme?
What plugins are you using? Looks like simple online list or online list with that SQL error with bb_online? Can you disable the plugins temporarily and try it like that?
Basically, determine if the problem happens on your server with a stock install, then add things back in one at a time and see where the problem comes in. Take a systematic approach, one thing at a time.