Server Crashes After placing machines

[Poseidon890]

Title: Server Crashes After placing machines

Version: 3.1.3

OS: OSX

Java Version: 6 or 7

Description of Problem:

When ever I place a machine on the server it just stops nothing works and it says the read timed out.

Error Messages:

Error Log:

SEVERE] java.lang.NoSuchFieldError: energyStored

17:12:13 [sEVERE]  at powercrystals.powerconverters.TileEntityEnergyLink.q_(TileEntityEnergyLink.java:76)

17:12:13 [sEVERE]  at net.minecraft.server.World.tickEntities(World.java:1189)

17:12:13 [sEVERE]  at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:559)

17:12:13 [sEVERE]  at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:457)

17:12:13 [sEVERE]  at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

17:12:13 [sEVERE] Unexpected exception

java.lang.NoSuchFieldError: energyStored

 at powercrystals.powerconverters.TileEntityEnergyLink.q_(TileEntityEnergyLink.java:76)

 at net.minecraft.server.World.tickEntities(World.java:1189)

 at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:559)

 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:457)

 at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

>

[zekeman615]

I am also getting this crash report:

19:20:26 [sEVERE] java.lang.NoSuchMethodError: buildcraft.api.PowerProvider.receiveEnergy(I)V

19:20:26 [sEVERE]at buildcraft.energy.TileEngine.q_(TileEngine.java:126)

19:20:26 [sEVERE]at net.minecraft.server.World.tickEntities(World.java:1189)

19:20:26 [sEVERE]at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:559)

19:20:26 [sEVERE]at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:457)

19:20:26 [sEVERE]at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

19:20:26 [sEVERE] Unexpected exception

java.lang.NoSuchMethodError: buildcraft.api.PowerProvider.receiveEnergy(I)V

at buildcraft.energy.TileEngine.q_(TileEngine.java:126)

at net.minecraft.server.World.tickEntities(World.java:1189)

at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:559)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:457)

at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

Any help would be great! Oh and by the way that is my server he is talking about^^(: