That isn't your problem. Your problem is your templates have been edited and they're not displaying properly. Check those two template groups I mentioned in your Style Manager. If any templates, particulary forumhome, forumdisplay or any of the forumhome_level#_(no)post templates, and if any of the names are the color red, then that means they've been customized or changed. It's likely the source of your problem.
Okay do you know how I could add a sidebar to my forum even with the top 5 stats and latest groups mods? Like on some forums, they have both mods and a sidebar, but the mods automatically compress so as it'll fit the screen. Currently, if I add a sidebar, it shows up at the bottom or top of the page, as there's not enoguh space with both mods there.