This is not exactly my XenForo, but it isn't working due to a recently installed add-on (AKA: Server Status) and I need an answer to why it is that way.
There's your answer, surely? You have provided no details of the site nor the problem so I'm not sure what it is you're expecting.
You mean [Herocraft Development] Minecraft Server Status Block 2.1 (as that is the only resource I found with Server Status in the description). If so, hit the resource discussion area. In the mean time, just disable that add-on. If you can't get to your ACP to disable it, then disable all add-ons by editing your /library/config.php and adding $config['enableListeners'] = 0; on a line and save it.
