Spoiler
If I have a Computer attached to a frame in SSP and triger a move this crash happens every time. Works fine in SMP
Mods loaded: 19
ModLoader 1.2.5
mod_CodeChickenCore 0.5.2
mod_MinecraftForge 3.1.2.90
mod_NotEnoughItems 1.2.2
mod_cjb_main 1.2.4/1.2.5 - 6.0.4
mod_cjb_minimap 1.2.4/1.2.5 - 6.0.4
mod_cjb_moreinfo 1.2.4/1.2.5 - 6.0.4
mod_ComputerCraft 1.33
mod_EnderStorage 1.1.1
mod_RedPowerControl 2.0pr5b2
mod_RedPowerCore 2.0pr5b2
mod_RedPowerLighting 2.0pr5b2
mod_RedPowerLogic 2.0pr5b2
mod_RedPowerMachine 2.0pr5b2
mod_RedPowerWiring 2.0pr5b2
mod_RedPowerWorld 2.0pr5b2
mod_WirelessRedstoneCore 1.2.1
mod_WirelessRedstoneRedPower 1.2.1.1
mod_WirelessRedstoneAddons 1.2.1
Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem.
--- BEGIN ERROR REPORT 12a6eb8d --------
Generated 5/25/12 6:06 PM
Minecraft: Minecraft 1.2.5
OS: Windows 7 (amd64) version 6.1
Java: 1.7.0_04, Oracle Corporation
VM: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation
LWJGL: 2.4.2
OpenGL: GeForce GTX 460M/PCIe/SSE2 version 4.2.0, NVIDIA Corporation
java.lang.NullPointerException
at mod_ComputerCraft.sendToServer(mod_ComputerCraft.java:410)
at dan200.computer.shared.NetworkedTerminalHelper.requestUpdate(NetworkedTerminalHelper.java:205)
at dan200.computer.shared.TileEntityComputer.m(TileEntityComputer.java:52)
at ack.a(Chunk.java:914)
at xd.a(World.java:2666)
at ack.e(Chunk.java:870)
at ack.a(Chunk.java:638)
at xd.b(World.java:668)
at eloraam.machine.TileMotor.dropFrame(TileMotor.java:223)
at eloraam.machine.TileMotor.n_(TileMotor.java:107)
at xd.n(World.java:2071)
at net.minecraft.client.Minecraft.k(Minecraft.java:1861)
at net.minecraft.client.Minecraft.x(Minecraft.java:819)
at net.minecraft.client.Minecraft.run(Minecraft.java:747)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT eb4ff5a3 ----------
ModLoader 1.2.5
mod_CodeChickenCore 0.5.2
mod_MinecraftForge 3.1.2.90
mod_NotEnoughItems 1.2.2
mod_cjb_main 1.2.4/1.2.5 - 6.0.4
mod_cjb_minimap 1.2.4/1.2.5 - 6.0.4
mod_cjb_moreinfo 1.2.4/1.2.5 - 6.0.4
mod_ComputerCraft 1.33
mod_EnderStorage 1.1.1
mod_RedPowerControl 2.0pr5b2
mod_RedPowerCore 2.0pr5b2
mod_RedPowerLighting 2.0pr5b2
mod_RedPowerLogic 2.0pr5b2
mod_RedPowerMachine 2.0pr5b2
mod_RedPowerWiring 2.0pr5b2
mod_RedPowerWorld 2.0pr5b2
mod_WirelessRedstoneCore 1.2.1
mod_WirelessRedstoneRedPower 1.2.1.1
mod_WirelessRedstoneAddons 1.2.1
Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem.
--- BEGIN ERROR REPORT 12a6eb8d --------
Generated 5/25/12 6:06 PM
Minecraft: Minecraft 1.2.5
OS: Windows 7 (amd64) version 6.1
Java: 1.7.0_04, Oracle Corporation
VM: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation
LWJGL: 2.4.2
OpenGL: GeForce GTX 460M/PCIe/SSE2 version 4.2.0, NVIDIA Corporation
java.lang.NullPointerException
at mod_ComputerCraft.sendToServer(mod_ComputerCraft.java:410)
at dan200.computer.shared.NetworkedTerminalHelper.requestUpdate(NetworkedTerminalHelper.java:205)
at dan200.computer.shared.TileEntityComputer.m(TileEntityComputer.java:52)
at ack.a(Chunk.java:914)
at xd.a(World.java:2666)
at ack.e(Chunk.java:870)
at ack.a(Chunk.java:638)
at xd.b(World.java:668)
at eloraam.machine.TileMotor.dropFrame(TileMotor.java:223)
at eloraam.machine.TileMotor.n_(TileMotor.java:107)
at xd.n(World.java:2071)
at net.minecraft.client.Minecraft.k(Minecraft.java:1861)
at net.minecraft.client.Minecraft.x(Minecraft.java:819)
at net.minecraft.client.Minecraft.run(Minecraft.java:747)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT eb4ff5a3 ----------