---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 7/2/14 3:27 PM
Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.NoSuchMethodError: buildcraft.api.recipes.IRefineryRecipeManager.addRecipe(Lnet/minecraftforge/fluids/FluidStack;Lnet/minecraftforge/fluids/FluidStack;Lnet/minecraftforge/fluids/FluidStack;II)V
at cpw.mods.fml.common.LoadController.transition(LoadController.java:162)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:694)
at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:288)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:527)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:815)
at net.minecraft.client.main.Main.main(SourceFile:103)
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 net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
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 org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:273)
at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:363)
at org.multimc.EntryPoint.listen(EntryPoint.java:165)
at org.multimc.EntryPoint.main(EntryPoint.java:54)
Caused by: java.lang.NoSuchMethodError: buildcraft.api.recipes.IRefineryRecipeManager.addRecipe(Lnet/minecraftforge/fluids/FluidStack;Lnet/minecraftforge/fluids/FluidStack;Lnet/minecraftforge/fluids/FluidStack;II)V
at forestry.plugins.PluginBuildCraft.addRefineryRecipe(PluginBuildCraft.java:110)
at forestry.plugins.PluginBuildCraft.doInit(PluginBuildCraft.java:81)
at forestry.core.ForestryCore.postInit(ForestryCore.java:149)
at forestry.core.ForestryClient.postInit(ForestryClient.java:38)
at forestry.Forestry.postInit(Forestry.java:77)
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.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
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.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:693)
... 18 more and the rest of the crashlog is here http://pastebin.com/N2x8U3En

just looked at the rest of the log, looks like forestry is erroring

thats werid why is it doing that is it a version error

It is neither Buildcraft nor Forestry's fault AFAICT. A quick search on openeye for the package buildcraft.api.recipes shows a whole list of mods that contain this package, which is a bad thing because it may override the official package discovered by the class loader. Buildcraft 6.0.16 and Forestry 2.4.1.27 run fine together, I just set up an instance of minecraft and had no problems loading.
Look on that list on openeye, one or more mods are overwriting the api package

@simon816 i looked at the error report quick and in the botom (mod list) forge is saying that the error originated from forestry

EDIT: @GnomesStalkChildren i found the issue in the forestry issue tracker, forestry for 1.7.2 isn't compatible (yet) with BC 6.0

ahhhh