New server install ultimate pack crashes

[MorphiusX]

Our clan recently restarted our server to load the ultimate pack and we have already had 2 crashes in 2 days

1st report (rather long)
http://pastebin.com/D1ccP8ZB

2nd report
http://pastebin.com/s65uTiKS

any help trackin down what is causing it would be a plus

im also getting alot of these
12:07:46 PM

12:07:46 PM
CONSOLE:
[SEVERE] Detected leaking worlds in memory. There are 4 worlds that appear to be persisting. A mod is likely caching the world incorrectly
12:07:46 PM
CONSOLE:
[SEVERE] The world 1c8e90da (world) has leaked.
12:07:46 PM
CONSOLE:
[SEVERE] The world 1dc5e353 (world) has leaked.

if it is worlds that are corrupted how can you tell which ones they are in the files so i can login and delete them

thanks

 

[Francis Baster]

Have you tried updating to the latest version of Java?

 

[Reenigne]

Same issue as OP, before and after an update to the latest version of Java. Crashes after about an hour and a half, I have only one dimension chunkloaded (a single chunk in the overworld) via a chickenchunks chunkloader, however I also get the notification that I have or four worlds that "appear to be presisting":

4 worlds:

2013-03-11 09:39:37 [SEVERE] [ForgeModLoader] Detected leaking worlds in memory. There are 4 worlds that appear to be persisting. A mod is likely caching the world incorrectly
 
2013-03-11 09:39:37 [SEVERE] [ForgeModLoader] The world 127cf247 (01) has leaked.
 
2013-03-11 09:39:37 [SEVERE] [ForgeModLoader] The world 68639f3d (01) has leaked.

2 worlds

2013-03-11 09:39:55 [SEVERE] [ForgeModLoader] Detected leaking worlds in memory. There are 2 worlds that appear to be persisting. A mod is likely caching the world incorrectly
 
2013-03-11 09:39:55 [SEVERE] [ForgeModLoader] The world 43a58b49 (01) has leaked.

These are both from the same save file that I loaded, closed and then loaded again.

I noticed that removing the chickenchunks chunkloader slows down how long it takes before the world leaking message appears and extends the time before memory overload crash, however it does not prevent the leak.

EDIT: Also tested an older backup of the same save file as above, before I ever placed any chunkloaders, and I got the same error. Finally, if it is relevant, the map/save was a port from an original Mindcrack pack world/save (this crash was not occurring with the Mindcrack pack version 8.1.0


EDIT2: For those that find this thread fast forward to the 10 minute mark to get an explanation of the world leaking message from CPW