Equivalent Exchange crashes server.

[hats]

Title: Equivalent Exchange crashes server.

Version: 3.1.2

OS: OS X Snow Leopard

Java Version: Java SE 6 64-bit 1.6.0_26-b03-384

Description of Problem:

I made a map in singleplayer. After a while playing it I wanted my friends to join, so I added the save folder to my Tekkit server. When I logged in, all the Equivalent Exchange blocks was dissapeared (transmutation table and energy condenser). When I try to put any one of the items in my inventory from creative mode, it crashes and says "Connection lost. Out of stream.".

Has anyone had the same problem? I started using Tekkit yesterday, so can it be my noobiness?

Error Messages:

Connection lost. Out of stream.

Error Log:

[Torezu]

Single-player maps store the player's data, inventory mostly, in the world.dat file. SMP maps store all that stuff in the individual [playerName].dat files. That makes the conversions from SMP to SSP Tekkit and back a bit of a challenge. I honestly don't even know how easy it would be to do.