Jebussz

The only time I've ever seen an error like that is when I had a chunk error at the location of the creatures that were being spawned. I would while in game go to those locations and see if there is a chunk error there. ( you can see them in MCEdit, but it is harder to see. ) so log into your server and go to x=141.5 , y=43 , z=273.50 If you see a giant dark square then that is a chunk error. You can easily fix it using MCEdit by deleting the chunk and then recreating the chunk after it is gone. ( also note that if you have anything important there it will probably be messed up).

I dont see why MCedit wouldnt work. I've used it and its worked fine for me on tekkit lite.

Whenever I'm using Mystcraft or Dimensional doors and I use them to transfer to a different dimension, as soon as I leave that other dimension the server unloads that dimension and I receive a world leak error. It's not a problem right away, but I've noticed that my server slowly starts to use more and more memory until it uses all of it. ( This normally takes about 12 hours to accumulate to a substantial amount that impacts the server ). If I reset the server everything goes back to normal until I or my friends start using those mods. Here is what I end up getting as an error (Note this was after exploring dimensional doors ): 2013-03-19 00:14:50 [iNFO] [ForgeModLoader] Unloading dimension 46 2013-03-19 00:14:50 [sEVERE] [ForgeModLoader] Detected leaking worlds in memory. There are 15 worlds that appear to be persisting. A mod is likely caching the world incorrectly 2013-03-19 00:14:50 [sEVERE] [ForgeModLoader] The world 75ed5a3d (TekkitLand) has leaked. 2013-03-19 00:14:50 [sEVERE] [ForgeModLoader] The world 6ab48200 (TekkitLand) has leaked. Im assuming the dimensions arn't being unloaded properly, but I honestly dont know. Can anyone tell me what i Need to do to stop this from happening? 64 bit system. Java 64 3gigs ram