Distibuter causing crash

[polkziggy]

A distributer is causing a server crash. It crashes without logs.

Console : java.lang.RuntimeException: class vswe.stevescarts.TileEntities.TileEntityDistributor is missing a mapping! This is a bug!
Error : Minecraft server error. Server will be restarted.
Console : at net.minecraft.tileentity.TileEntity.func_145841_b(TileEntity.java:80) ~[aor.class:?]
Console : at vswe.stevescarts.TileEntities.TileEntityDistributor.func_145841_b(TileEntityDistributor.java:78) ~[TileEntityDistributor.class:?]