I have recently been trying to start up my own Tekkit server. I created a map with MC Edit and then went into single player to customize it more with Tekkit blocks. I then copied the world over into my Tekkit 1.1.8 server folder and launched the server. All of the vanilla MC stuff is there, but anything from Tekkit is now missing. The items are still in my creative menu and NEI menu and I can place them into my inventory, but if I try to place any items from Tekkit, such as a flag, the item disappears from my inventory and doesn't appear on the ground and the existing Tekkit blocks I had placed in single player are just gone, leaving empty spots where they were. Anyone have any ideas as to how to fix this?