These things are all greek to me, can anyone tell me if I need to worry about this: Code: 2011-07-05 15:25:06 [SEVERE] java.io.IOException: Not in GZIP format 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.readHeader(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.CompressedStreamTools.a(SourceFile:8) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.WorldLoader.b(SourceFile:54) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.WorldLoaderServer.isConvertable(SourceFile:84) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:165) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:148) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:335) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:422) 2011-07-05 15:25:06 [SEVERE] java.io.IOException: Not in GZIP format 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.readHeader(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.CompressedStreamTools.a(SourceFile:8) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.WorldLoader.b(SourceFile:65) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.WorldLoaderServer.isConvertable(SourceFile:84) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:165) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:148) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:335) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:422) 2011-07-05 15:25:06 [SEVERE] java.io.IOException: Not in GZIP format 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.readHeader(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.CompressedStreamTools.a(SourceFile:8) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.PlayerNBTManager.c(SourceFile:95) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.World.<init>(World.java:118) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.WorldServer.<init>(WorldServer.java:27) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:180) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:148) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:335) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:422) 2011-07-05 15:25:06 [SEVERE] java.io.IOException: Not in GZIP format 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.readHeader(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.CompressedStreamTools.a(SourceFile:8) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.PlayerNBTManager.c(SourceFile:107) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.World.<init>(World.java:118) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.WorldServer.<init>(WorldServer.java:27) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:180) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:148) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:335) 2011-07-05 15:25:06 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:422) 2011-07-05 15:25:07 [SEVERE] java.io.IOException: Not in GZIP format 2011-07-05 15:25:07 [SEVERE] at java.util.zip.GZIPInputStream.readHeader(Unknown Source) 2011-07-05 15:25:07 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:07 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.CompressedStreamTools.a(SourceFile:8) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.PlayerNBTManager.c(SourceFile:95) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.World.<init>(World.java:118) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.WorldServer.<init>(WorldServer.java:27) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.SecondaryWorldServer.<init>(SecondaryWorldServer.java:8) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:210) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:148) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:335) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:422) 2011-07-05 15:25:07 [SEVERE] java.io.IOException: Not in GZIP format 2011-07-05 15:25:07 [SEVERE] at java.util.zip.GZIPInputStream.readHeader(Unknown Source) 2011-07-05 15:25:07 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:07 [SEVERE] at java.util.zip.GZIPInputStream.<init>(Unknown Source) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.CompressedStreamTools.a(SourceFile:8) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.PlayerNBTManager.c(SourceFile:107) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.World.<init>(World.java:118) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.WorldServer.<init>(WorldServer.java:27) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.SecondaryWorldServer.<init>(SecondaryWorldServer.java:8) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:210) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:148) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:335) 2011-07-05 15:25:07 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)