This is a clientside crash, happens consistently after getting close to a village with AgriCraft generated structures in it, but did not happen until AgriCraft blocks were chunk loaded.

Crash details are below, full report is attached

Description: Tesselating block model

java.lang.NullPointerException: Tesselating block model
at com.infinityraider.infinitylib.render.block.BakedInfBlockModel.func_188616_a(BakedInfBlockModel.java:69)
at net.minecraftforge.client.model.pipeline.ForgeBlockModelRenderer.render(ForgeBlockModelRenderer.java:129)
at net.minecraftforge.client.model.pipeline.ForgeBlockModelRenderer.func_187498_b(ForgeBlockModelRenderer.java:103)
at net.minecraft.client.renderer.BlockModelRenderer.func_187493_a(BlockModelRenderer.java:46)
at net.minecraft.client.renderer.BlockModelRenderer.func_178267_a(BlockModelRenderer.java:37)
at net.minecraft.client.renderer.BlockRendererDispatcher.func_175018_a(BlockRendererDispatcher.java:81)
at net.minecraft.client.renderer.chunk.RenderChunk.func_178581_b(RenderChunk.java:199)
at net.minecraft.client.renderer.chunk.ChunkRenderWorker.func_178474_a(SourceFile:100)
at net.minecraft.client.renderer.chunk.ChunkRenderWorker.run(SourceFile:43)
at java.lang.Thread.run(Thread.java:745)

-- Head --
Thread: Client thread
Stacktrace:
at com.infinityraider.infinitylib.render.block.BakedInfBlockModel.func_188616_a(BakedInfBlockModel.java:69)
at net.minecraftforge.client.model.pipeline.ForgeBlockModelRenderer.render(ForgeBlockModelRenderer.java:129)
at net.minecraftforge.client.model.pipeline.ForgeBlockModelRenderer.func_187498_b(ForgeBlockModelRenderer.java:103)

-- Block model being tesselated --
Details:
Block: com.infinityraider.infinitylib.block.blockstate.BlockStateWithPos@25da74aa
Block location: World: (2196,63,3605), Chunk: (at 4,3,5 in 137,225; contains blocks 2192,0,3600 to 2207,255,3615), Region: (4,7; contains chunks 128,224 to 159,255, blocks 2048,0,3584 to 2559,255,4095)
Using AO: true
Stacktrace:
at net.minecraft.client.renderer.BlockModelRenderer.func_187493_a(BlockModelRenderer.java:46)
at net.minecraft.client.renderer.BlockModelRenderer.func_178267_a(BlockModelRenderer.java:37)

-- Block being tesselated --
Details:
Block type: ID #299 (tile.agricraft:crop // com.infinityraider.agricraft.blocks.BlockCrop)
Block data value: 0 / 0x0 / 0b0000
Block location: World: (2196,63,3605), Chunk: (at 4,3,5 in 137,225; contains blocks 2192,0,3600 to 2207,255,3615), Region: (4,7; contains chunks 128,224 to 159,255, blocks 2048,0,3584 to 2559,255,4095)
Stacktrace:
at net.minecraft.client.renderer.BlockRendererDispatcher.func_175018_a(BlockRendererDispatcher.java:81)

crash-2016-12-15_00.34.58-client.txt

Been having this issue as well but don't know which crash report is related to it. Just figured I would mention that it's more than one person.

First of all, don't just paste entire hunks of text in the issue, use something like pastebin, it keeps the discussion clean and readable.
Second, this is not an Agricraft issue but an InfinityLib issue, so I'm moving this over to the InfinityLib tracker: InfinityRaider/InfinityLib#12.

Thanks for reporting either way.