Hi Coros, love the mod. Happen to run across this a few times and it seems to stem from Localized Weather. Below is a short log followed by the full blown crash log (extra "at"s removed)

java.lang.IllegalStateException: Already tesselating!
at net.minecraft.client.renderer.Tessellator.func_78371_b(Tessellator.java:374)
at codechicken.lib.render.CCRenderState.startDrawing(CCRenderState.java:418)
codechicken.chunkloader.TileChunkLoaderRenderer.func_147500_a(TileChunkLoaderRenderer.java
net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147549_a(SourceFile:100)
net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147544_a(SourceFile:92)
at net.minecraft.client.renderer.RenderGlobal.func_147589_a(RenderGlobal.java:766)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1552)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1302)
weather2.weathersystem.EntityRendererProxyWeather2Mini.func_78480_b(EntityRendererProxyWeather2Mini.java:50)

Here is the Paste of the full log: http://paste.ee/p/IRldG

No rush to fix this, just wanted to point it out to help with future issues. Thanks for everything, take care and have a good 'un.

Unlikely its an issue with my mod, the code just happens to route through my EntityRendererProxyWeather2Mini class which does nothing for that particular method not even sure why i overrode that method, must be something old, see https://github.com/Corosauce/weather2/blob/master/weather2/weathersystem/EntityRendererProxyWeather2Mini.java#L48-L52