I am running the latest version of ProjectRed core and its dependents (4.9.1.92)

The problem is fairly simple, occasionally when connecting and disconnecting from my server the game crashes, it shows this stack trace:

Description: Batching chunks java.lang.NullPointerException: Batching chunks at mrtjp.projectred.relocation.MovementManager$.getWorldStructs(movement.scala:38) at mrtjp.projectred.relocation.WrappedTileMap.get(renders.scala:345) at mrtjp.projectred.relocation.WrappedTileMap.get(renders.scala:325) at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147546_a(TileEntityRendererDispatcher.java:92) at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147547_b(TileEntityRendererDispatcher.java:107) at net.minecraft.client.renderer.chunk.RenderChunk.func_178581_b(RenderChunk.java:260) 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(Unknown Source)

Here is the full crash report

The same issue was posted here: #1341 but again, this crash happens on the latest version of the mod

This has been fixed in dev. Wait for next release.