Installed Tekkit 2.1.1 for the server and the clients are running the recommend build, 3.0.3
When someone connects, this is what I see -
2012-06-08 15:30:03 [sEVERE] java.io.IOException: Received string length longer than maximum allowed (107 > 16)
2012-06-08 15:30:03 [sEVERE] at net.minecraft.server.Packet.a(Packet.java:120)
2012-06-08 15:30:03 [sEVERE] at net.minecraft.server.Packet.a(Packet.java:120)
2012-06-08 15:30:03 [sEVERE] at net.minecraft.server.Packet1Login.a(Packet1Login.java:38)
2012-06-08 15:30:03 [sEVERE] at net.minecraft.server.Packet.a(Packet.java:79)
2012-06-08 15:30:03 [sEVERE] at net.minecraft.server.NetworkManager.h(NetworkManager.java:152)
2012-06-08 15:30:03 [sEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.java:270)
2012-06-08 15:30:03 [sEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:76)
I have java updated, but could this be server side issue with java being outdated? I found posts like this for MAC, but nothing for Windows.