Im having the same type of error however it happens when i try to access my inventory. It says this:
Rendering screen
java.lang.NoSuchMethodError: net.minecraft.client.gui.inventory.GuiInventory.func_194310_f()Lnet/minecraft/client/gui/recipebook/GuiRecipeBook;
at com.pixelmonmod.pixelmon.client.gui.inventory.InventoryPixelmon.drawScreen(InventoryPixelmon.java:95)
How do ifix this problem