I think it is wpml. when I deactivate this plugin, Forum works. One more thing I want to ask is that what is the difference between forum types (Forum and Category). I create a new forum and I choose Forum type. then I create another new one with Category type. I don’t see the difference between appearances of these two forums.
I have tried again, and it works. thank you so much. But it also points out that bbpress conflicts with one of my plugins. Is this true?
I have tried both two ways, but I cannot see Forum in Dashboard. I wonder if it is needed any extra step.
