net.minecraft.src.MinecraftException: The save is being accessed from
another location, aborting
at net.minecraft.src.SaveHandler.checkSessionLock(SaveHandler.ja
va:88)
at net.minecraft.src.World.checkSessionLock(World.java:4324)
at net.minecraft.src.AnvilChunkLoader.saveChunk(AnvilChunkLoader
.java:99)
at net.minecraft.src.ssp.ChunkProvider.saveChunkData(ChunkProvid
er.java:188)
at net.minecraft.src.ssp.ChunkProvider.saveChunks(ChunkProvider.
java:240)
at net.minecraft.src.ssp.WorldSSP.quickSaveWorld(WorldSSP.java:3
97)
at net.minecraft.src.ssp.GuiIngameMenuOverlay.postDrawScreen(Gui
IngameMenuOverlay.java:70)
at net.minecraft.src.GuiScreen.drawScreen2(GuiScreen.java:54)
at net.minecraft.src.EntityRenderer.updateCameraAndRender(Entity
Renderer.java:1165)
at net.minecraft.src.Minecraft.runGameLoop(Minecraft.java:902)
at net.minecraft.src.Minecraft.run(Minecraft.java:794)
at net.minecraft.client.main.Main.main(Main.java:92)
at Start.main(Start.java:11)
net.minecraft.src.MinecraftException: The save is being accessed from another location, aborting at net.minecraft.src.SaveHandler.checkSessionLock(SaveHandler.ja va:88) at net.minecraft.src.World.checkSessionLock(World.java:4324) at net.minecraft.src.AnvilChunkLoader.saveChunk(AnvilChunkLoader .java:99) at net.minecraft.src.ssp.ChunkProvider.saveChunkData(ChunkProvid er.java:188) at net.minecraft.src.ssp.ChunkProvider.saveChunks(ChunkProvider. java:240) at net.minecraft.src.ssp.WorldSSP.quickSaveWorld(WorldSSP.java:3 97) at net.minecraft.src.ssp.GuiIngameMenuOverlay.postDrawScreen(Gui IngameMenuOverlay.java:70) at net.minecraft.src.GuiScreen.drawScreen2(GuiScreen.java:54) at net.minecraft.src.EntityRenderer.updateCameraAndRender(Entity Renderer.java:1165) at net.minecraft.src.Minecraft.runGameLoop(Minecraft.java:902) at net.minecraft.src.Minecraft.run(Minecraft.java:794) at net.minecraft.client.main.Main.main(Main.java:92) at Start.main(Start.java:11)
An aptempt to fix it, it works but we should keep the check and find why it's happenning : http://www.minecraftforum.net/topic/534818-164-olddaysnbxlite-spawnhuman-ssp-sspc/page__st__14640#entry31018852 https://dl.dropboxusercontent.com/u/36896781/ODNBXFix/World.java
Only happend when SSP, Olddays Core and NBXLite are installed on the client A recent appearance when the mod was updated to 1.6.4