From time to time I'm getting this:
java.lang.NullPointerException: Unexpected error
at mods.betterfoliage.client.render.impl.RenderBlockBetterLeaves.renderWorldBlock(RenderBlockBetterLeaves.java:47)
at cpw.mods.fml.client.registry.RenderingRegistry.renderWorldBlock(RenderingRegistry.java:118)
at net.minecraft.src.FMLRenderAccessLibrary.renderWorldBlock(FMLRenderAccessLibrary.java:53)
at net.minecraft.client.renderer.RenderBlocks.func_147805_b(RenderBlocks.java:293)
at net.minecraft.client.renderer.WorldRenderer.func_147892_a(WorldRenderer.java:181)
at net.minecraft.client.renderer.RenderGlobal.func_72716_a(RenderGlobal.java:1522)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1178)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1011)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:945)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:835)
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)

It seems to be related to animated textures ( full grown ) on Tinkers Construct bushes. Crossed textures from BF on this block have missing textures ( only in last animated stage ). Happens moslty on world load.

Crash is fixed in 0.9.5-beta.

I'll need to figure out animations, until then the missing texture issue remains. As a workaround, I suggest you add the following line to the classesLeaves.cfg in the config:

-tconstruct.blocks.OreberryBushEssence

".OreberryBushEssence" ? Looks like I was adding a little wrong name before.. thanks for help.