On item hover crash

[Montiac]

Whenever i hover in my inventory on an item minecraft get crashed (doesn't matter what item i hover on, even vanilla ones)

java.lang.NoClassDefFoundError: com/mojang/realmsclient/gui/ChatFormatting
at mjaroslav.mcmods.mjutils.mod.common.handler.TooltipEventHandler.itemTooltipEvent(TooltipEventHandler.java:40)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_1714_TooltipEventHandler_itemTooltipEvent_ItemTooltipEvent.invoke(.dynamic)
at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)
at net.minecraftforge.event.ForgeEventFactory.onItemTooltip(ForgeEventFactory.java:169)
at net.minecraft.item.ItemStack.func_82840_a(Unknown Source)
at vazkii.botania.client.core.handler.TooltipAdditionDisplayHandler.render(TooltipAdditionDisplayHandler.java:65)
at vazkii.botania.client.core.handler.ClientTickHandler.renderTick(ClientTickHandler.java:54)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_1066_ClientTickHandler_renderTick_RenderTickEvent.invoke(.dynamic)
at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)
at cpw.mods.fml.common.FMLCommonHandler.onRenderTickEnd(FMLCommonHandler.java:340)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1003)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)