Getting a crash server side that doesn't seem to happen client side:

Description: Exception in server tick loop
java.lang.NoClassDefFoundError: mekanism/common/multipart/ItemPartTransmitter
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
at java.lang.Class.privateGetPublicFields(Class.java:2614)
at java.lang.Class.getFields(Class.java:1557)
at
net.minecraftforge.fml.common.registry.ObjectHolderRegistry.scanClassForFields(ObjectHolderRegistry.java:114)
at net.minecraftforge.fml.common.registry.ObjectHolderRegistry.scanTarget(ObjectHolderRegistry.java:84)
at net.minecraftforge.fml.common.registry.ObjectHolderRegistry.findObjectHolders(ObjectHolderRegistry.java:42)
at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:584)
at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:93)
at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:320)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:118)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:429)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: mekanism.common.multipart.ItemPartTransmitter
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 13 more
Caused by: java.lang.NoClassDefFoundError: mcmultipart/item/ItemMultiPart
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 15 more
Caused by: java.lang.ClassNotFoundException: mcmultipart.item.ItemMultiPart
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 19 more

Is mcmultipart required as a mod dependency? the mod API doesn't seem to be included in the codebase right now

Yeah, I've done practically no server testing, I'm probably accessing client-only in the reported class. Thanks for the report

By the way, how is the port in your testing so far? Are things working nicely?

Client side everything is good except for the multipart right now.
Multipart construction causes a hard crash and doesn't form the multi block.

The crash for that is:

`Ticking block entity

java.lang.NullPointerException: Ticking block entity
at mekanism.common.tile.TileEntityThermalEvaporationController.addSolarPanel(TileEntityThermalEvaporationController.java:537)
at mekanism.common.tile.TileEntityThermalEvaporationController.scanTopLayer(TileEntityThermalEvaporationController.java:403)
at mekanism.common.tile.TileEntityThermalEvaporationController.buildStructure(TileEntityThermalEvaporationController.java:360)
at mekanism.common.tile.TileEntityThermalEvaporationController.refresh(TileEntityThermalEvaporationController.java:195)
at mekanism.common.tile.TileEntityThermalEvaporationController.onUpdate(TileEntityThermalEvaporationController.java:103)
at mekanism.common.tile.TileEntityBasicBlock.func_73660_a(TileEntityBasicBlock.java:82)
at mekanism.common.tile.TileEntityContainerBlock.func_73660_a(TileEntityContainerBlock.java:47)
at net.minecraft.world.World.func_72939_s(World.java:1797)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:618)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:707)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:611)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:148)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:469)
at java.lang.Thread.run(Unknown Source)
`

http://pastebin.com/BAjvJxti

Where can I get the 1.9.4 version? I'd like to help with the testing.

you only get access to beta version, if you donate money, fill out the template on the mekanism site and got invited to it

@Xiaminou compile it

How do I do that without gradlew.bat?

By installing gradle.

got 6 errors, did you successfully build it?

The 1.9.4 source will successfully build but it doesn't currently work server-side. it causes a hard crash.
It works in single player though so that can be tested.
1.9.4 binaries are not currently available on the dev build server

To the crash:
At if(addSolarPanel(pointer.getTileEntity(worldObj), corner))
it can be replaced with pointerTile.
Also if all solar panels were placed and the TileEntity was null the scan was done before the TileEntity was finished spawning or somehow the wrong Block Position was used.
Either way a null Check on pointerTile should fix the second crash :)

Fixed in development.