Server Crashes after Starting up

[WIDEO]

How to fix?

Crash Log Thingy:
---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 8/31/13 10:22 PM
Description: Exception in server tick loop

java.lang.RuntimeException: java.util.zip.ZipException: Not in GZIP format
at codechicken.enderstorage.api.EnderStorageManager.load(EnderStorageManager.java:157)
at codechicken.enderstorage.api.EnderStorageManager.<init>(EnderStorageManager.java:118)
at codechicken.enderstorage.api.EnderStorageManager.reloadManager(EnderStorageManager.java:195)
at codechicken.enderstorage.api.EnderStorageManager$EnderStorageSaveHandler.onWorldLoad(EnderStorageManager.java:41)
at net.minecraftforge.event.ASMEventHandler_43_EnderStorageSaveHandler_onWorldLoad_Load.invoke(.dynamic)
at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:39)
at net.minecraftforge.event.EventBus.post(EventBus.java:108)
at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:251)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:186)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:431)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
Caused by: java.util.zip.ZipException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at net.minecraft.nbt.CompressedStreamTools.func_74796_a(CompressedStreamTools.java:28)
at codechicken.enderstorage.api.EnderStorageManager.load(EnderStorageManager.java:144)
... 10 more


A detailed walkthrough of the error, its code path and all known details is as follows: