Tekkit Crashes when loading world

[KidSchadow]

Every time I try to load my world, it flashes "Loading World", and then exits back to the technic launcher.IT says there's something wrong with a better barrels mod, but I can't find that in the mods folder.

Here's the error report:

---- Minecraft Crash Report ----
// Shall we play a game?

Time: 11/29/15 1:21 PM
Description: Exception in server tick loop

java.lang.RuntimeException: java.util.zip.ZipException: Not in GZIP format
    at mcp.mobius.betterbarrels.bspace.BSpaceStorageHandler.loadFromFile(BSpaceStorageHandler.java:380)
    at mcp.mobius.betterbarrels.bspace.BBEventHandler.onWorldLoad(BBEventHandler.java:21)
    at cpw.mods.fml.common.eventhandler.ASMEventHandler_151_BBEventHandler_onWorldLoad_Load.invoke(.dynamic)
    at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
    at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138)
    at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:73)
    at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:92)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)
    at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
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:29)
    at mcp.mobius.betterbarrels.bspace.BSpaceStorageHandler.loadFromFile(BSpaceStorageHandler.java:364)
    ... 8 more

[AetherPirate]

Pastebin the full log. 

Are you using optifine or fastcraft? 

[KidSchadow]

Here you go: http://pastebin.com/5uUhAJQg

And no, I'm only using the mods that come with installing tekkit legends.

[AetherPirate]

Better Barrels is from the JABBA mod, that one is in there.... As a guess,  make a backup and delete any Jabba folders or files in the Config folder. Don't delete the mod jabba.jar file.