Mystcraft Age crashes server (FTB Ultimate)

[Caileus]

Hi all,

I created a Mystcraft book, only using a single page (forget which one - just a normal biome I think) and the server crashed trying to load it. Now although everyone else can play on the server, if I try to log in I crash it - since it will try to load the bugged age again. We tried disabling cave world and skyworlds (based on other forum suggestions) but it hasn't fixed it. If someone else logged in and deleted the book would this work? Or would my character still be 'stuck'? The error in the FTB console is as follows (no Minecraft crash report is created):

2013-08-05 20:07:11 [INFO] [STDERR] java.net.SocketTimeoutException: Read timed out
2013-08-05 20:07:11 [INFO] [STDERR] at java.net.SocketInputStream.socketRead0(Native Method)
2013-08-05 20:07:11 [INFO] [STDERR] at java.net.SocketInputStream.read(Unknown Source)
2013-08-05 20:07:11 [INFO] [STDERR] at java.net.SocketInputStream.read(Unknown Source)
2013-08-05 20:07:11 [INFO] [STDERR] at java.io.FilterInputStream.read(Unknown Source)
2013-08-05 20:07:11 [INFO] [STDERR] at org.bouncycastle.crypto.io.CipherInputStream.nextChunk(Unknown Source)
2013-08-05 20:07:11 [INFO] [STDERR] at org.bouncycastle.crypto.io.CipherInputStream.read(Unknown Source)
2013-08-05 20:07:11 [INFO] [STDERR] at java.io.FilterInputStream.read(Unknown Source)
2013-08-05 20:07:11 [INFO] [STDERR] at ef.a(Packet.java:142)
2013-08-05 20:07:11 [INFO] [STDERR] at cg.i(TcpConnection.java:324)
2013-08-05 20:07:11 [INFO] [STDERR] at cg.c(TcpConnection.java:544)
2013-08-05 20:07:11 [INFO] [STDERR] at ch.run(SourceFile:93)

All suggestions as to how to fix this are welcome!

Thanks in Advance,
Andy