ResonantEngine crash

---- Minecraft Crash Report ----
// Would you like a cupcake?

Time: 25.01.15 23:15
Description: Exception in server tick loop

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: resonant/lib/render/wrapper/ItemRenderHandler
	at cpw.mods.fml.common.LoadController.transition(LoadController.java:162)
	at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:515)
	at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:88)
	at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:319)
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:170)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:620)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: resonant/lib/render/wrapper/ItemRenderHandler
	at resonant.lib.mod.content.ModManager.newBlock(ModManager.java:126)
	at resonant.lib.mod.content.ModManager.newBlock(ModManager.java:102)
	at resonant.lib.mod.content.ModManager.newBlock(ModManager.java:84)
	at resonant.lib.prefab.tile.multiblock.synthetic.SyntheticMultiblock.<init>(SyntheticMultiblock.java:22)
	at resonant.core.ResonantEngine$.preInit(ResonantEngine.scala:63)
	at resonant.core.ResonantEngine.preInit(ResonantEngine.scala)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:513)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
	at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
	at com.google.common.eventbus.EventBus.post(EventBus.java:275)
	at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)
	at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
	at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
	at com.google.common.eventbus.EventBus.post(EventBus.java:275)
	at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
	at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:513)
	... 5 more
Caused by: java.lang.ClassNotFoundException: resonant.lib.render.wrapper.ItemRenderHandler
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 38 more
Caused by: java.lang.RuntimeException: Attempted to load class resonant/lib/render/wrapper/ItemRenderHandler for invalid side SERVER
	at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:51)
	at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
	... 40 more


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 1.7.10
	Operating System: Windows 8.1 (amd64) version 6.3
	Java Version: 1.8.0_31, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 189464544 bytes (180 MB) / 259522560 bytes (247 MB) up to 1038876672 bytes (990 MB)
	JVM Flags: 3 total; -Xincgc -Xms256M -Xmx1024M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: ~~ERROR~~ NullPointerException: null
	Profiler Position: N/A (disabled)
	Is Modded: Definitely; Server brand changed to 'cauldron,craftbukkit,mcpc,fml,forge'
	Type: Dedicated Server (map_server.txt)