What gives? What is happening? Full server.log: http://pastebin.com/xNmC3JGU Code:java 2013-11-29 22:49:50 [INFO] Attempted to place a tile entity (net.minecraft.server.v1_6_R3.TileEntityChest@5f7f1dbd) at -81,16,-45 (BEDROCK) where there was no entity tile! What's worse (or good?), the game plays perfectly normal in the server. Ha, can't believe how easy the fix was! Found it on my own! I remembered I messed around with my spawn in MCEdit and I somehow forgot to remove the Mob Spawner from underneath it and I got the errors because there was no space for them to spawn, since I filled all the air with bedrock. EDIT by Moderator: merged posts, please use the edit button instead of double posting.