[Help Tekkit Server wont let me connect!]

Guys I just downloaded 2.1.1 tekkit server and followed the guidelines on how to set up a tekkit server including editing the path variables, i run it on bat and i see it as javaw.exe on my processes but somehow it wont let me join the server, i'm using the latest version of tekkit, am i meant to use recommended?

I got this error message when i tried connecting: SEVERE] java.io.IOException: Received string length longer than maximum allowed (90 > 16)

2012-05-12 18:47:01 [sEVERE] at net.minecraft.server.Packet.a(Packet.java:120)

2012-05-12 18:47:01 [sEVERE] at net.minecraft.server.Packet1Login.a(Packet1Login.java:38)

2012-05-12 18:47:01 [sEVERE] at net.minecraft.server.Packet.a(Packet.java:79)

2012-05-12 18:47:01 [sEVERE] at net.minecraft.server.NetworkManager.h(NetworkManager.java:152)

2012-05-12 18:47:01 [sEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.java:270)

2012-05-12 18:47:01 [sEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:76)

2012-05-12 18:47:01 [iNFO] /5.152.252.30:61878 lost connection