1.8 BOP looking for client classes, crashes server

[15:03:29] [Server thread/ERROR] [FML]: Caught exception from BiomesOPlenty
java.lang.NoClassDefFoundError: net/minecraft/client/resources/model/ModelBakery
        at biomesoplenty.common.init.ModBlocks.registerBlock(ModBlocks.java:67) ~[ModBlocks.class:?]
        at biomesoplenty.common.init.ModBlocks.init(ModBlocks.java:35) ~[ModBlocks.class:?]
        at biomesoplenty.core.BiomesOPlenty.preInit(BiomesOPlenty.java:44) ~[BiomesOPlenty.class:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_72]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_72]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_72]
        at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_72]
        at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:515) ~[FMLModContainer.class:?]
        at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_72]
        at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_72]
        at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[minecraft_server.1.8.jar:?]
        at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[minecraft_server.1.8.jar:?]
        at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[minecraft_server.1.8.jar:?]
        at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[minecraft_server.1.8.jar:?]
        at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[minecraft_server.1.8.jar:?]
        at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:208) ~[LoadController.class:?]
        at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:187) ~[LoadController.class:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_72]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_72]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_72]
        at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_72]
        at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[minecraft_server.1.8.jar:?]
        at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[minecraft_server.1.8.jar:?]
        at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[minecraft_server.1.8.jar:?]
        at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[minecraft_server.1.8.jar:?]
        at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[minecraft_server.1.8.jar:?]
        at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118) [LoadController.class:?]
        at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:513) [Loader.class:?]
        at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:87) [FMLServerHandler.class:?]
        at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:319) [FMLCommonHandler.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:117) [po.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438) [MinecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_72]
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.resources.model.ModelBakery
        at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.11.jar:?]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_72]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_72]
        ... 34 more
Caused by: java.lang.RuntimeException: Attempted to load class cxh for invalid side SERVER
        at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:49) ~[modpack.jar:?]
        at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.11.jar:?]
        at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.11.jar:?]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_72]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_72]
        ... 34 more