Problem Mystcraft bug?

[Stayedxenosx]

In my server, people not connected to my local network cannot join ANY mystcraft ages; It just disconnects them constantly until someone teleports them to the overworld with the "tpx" command.

I asked them to send me what their console tells them, this is what I got from it:

2012-12-24 10:44:56 [INFO] [STDERR] java.net.SocketException: Connection reset
2012-12-24 10:44:56 [INFO] [STDERR] at java.net.SocketInputStream.read(Unknown Source)
2012-12-24 10:44:56 [INFO] [STDERR] at java.io.FilterInputStream.read(Unknown Source)
2012-12-24 10:44:56 [INFO] [STDERR] at org.bouncycastle.crypto.io.CipherInputStream.nextChunk(Unknown Source)
2012-12-24 10:44:56 [INFO] [STDERR] at org.bouncycastle.crypto.io.CipherInputStream.read(Unknown Source)
2012-12-24 10:44:56 [INFO] [STDERR] at java.io.DataInputStream.readFully(Unknown Source)
2012-12-24 10:44:56 [INFO] [STDERR] at dt.a(Packet56MapChunks.java:94)
2012-12-24 10:44:56 [INFO] [STDERR] at ef.a(Packet.java:166)
2012-12-24 10:44:56 [INFO] [STDERR] at cg.i(TcpConnection.java:320)
2012-12-24 10:44:56 [INFO] [STDERR] at cg.c(TcpConnection.java:540)
2012-12-24 10:44:56 [INFO] [STDERR] at ch.run(SourceFile:93)

I can't make sense of much of it, they just said this came up in red when they disconnected.
Thanks in advance for any advice you can give

 

[Greedseed]

it is a corrupt chunk or item in that mystcraft age.

 

[Rikki21]

What version forge are you running? Try updating to forge 480 for everyone and see if that fixes it.

 

[Stayedxenosx]

it is a corrupt chunk or item in that mystcraft age.

Is there any way to find what the corrupt item/chunk is, and fix it?

 

[Greedseed]

i think its a machine that is acting up. I cant see any direct link to what mod it is cousing. IS this thez full crash log ?

 

[Stayedxenosx]

i think its a machine that is acting up. I cant see any direct link to what mod it is cousing. IS this thez full crash log ?

Yeah, pretty much, the only other parts are the regular "Connecting..." things, which would give away My Pc's IP address, which, personally, I do not want to do.