Long story short, a server that I'm an OP for has been getting griefed every night after all the OPs have logged off. We've been running tekkit 3.1.2 with no mods banned. We have worldguard, and we have made sure that the full areas that we are trying to protect are covered, but somehow large areas have been getting destroyed. At the moment we(the OPs) have no idea how it is being done though, and we could really use some help. If anyone knows what might be happening, or how to stop it, we could really use your help. And if you need more info, just ask for what you need.