So my friend and I decided to start a FTB server. We get on the server and everything is fine. When I try to craft a cog, It wouldn't let me grab the cog and put it into my inventory. I try crafting scaffolds, and the same thing happened. My friend did the same and got the same results. Someone told me that its probably a problem with the config files but I didn't find anything wrong. Can someone please tell me how to fix it. Thanks