[MC-87353] java.util.zip.ZipException: Not in GZIP format

Related issues

is duplicated by

MC-88904 Out Side of world...

MC-89023 Blocks respawn after relog

MC-99290 World Disappears from world selection menu

MC-105914 JAVA (TM) Runtime has Stopped -

MC-108433 Several 'Large' Minecraft worlds going corrupt

MC-111150 Crashing every time I get on

MC-138875 Game Crashed Immediately After Entering a world

relates to

MC-87248 Crashes when running around

MC-74762 Chunks Swapping

Comments

kumasasa 2015-08-25T19:23:00Z

Please attach the complete output of the "Game Output (Your Minecraft name) " which can be found on the fourth tab of the launcher to this ticket.

If the launcher closes after game start, please edit your profile and select "Launcher visibility" then, "Keep the launcher open".

migrated 2015-08-25T19:28:07Z

[13:38:05] [Client thread/INFO]: Setting user: mitchyb99
[13:38:05] [Client thread/INFO]: (Session ID is token:22359eaf140c4f3b8821e23463fdcd09:e84a94ec9e5d4430af532a02b2a3e925)
[13:38:10] [Client thread/INFO]: LWJGL Version: 2.9.4
[13:38:12] [Client thread/INFO]: Reloading ResourceManager: Default
[13:38:13] [Sound Library Loader/INFO]: Starting up SoundSystem...
[13:38:14] [Thread-6/INFO]: Initializing LWJGL OpenAL
[13:38:14] [Thread-6/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[13:38:14] [Thread-6/INFO]: OpenAL initialized.
[13:38:14] [Sound Library Loader/INFO]: Sound engine started
[13:38:21] [Client thread/INFO]: Created: 512x512 textures-atlas
[13:38:25] [Client thread/ERROR]: Exception reading C:\Users\Scott\AppData\Roaming\.minecraft\saves\SM\level.dat
java.util.zip.ZipException: Not in GZIP format
	at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91) ~[?:1.8.0_25]
	at dx.a(SourceFile:13) ~[1.8.8.jar:?]
	at atn.c(SourceFile:62) [1.8.8.jar:?]
	at atk.b(SourceFile:52) [1.8.8.jar:?]
	at axv.f(SourceFile:87) [1.8.8.jar:?]
	at axv.b(SourceFile:59) [1.8.8.jar:?]
	at axu.a(SourceFile:376) [1.8.8.jar:?]
	at ave.a(SourceFile:819) [1.8.8.jar:?]
	at aya.a(SourceFile:215) [1.8.8.jar:?]
	at axu.a(SourceFile:350) [1.8.8.jar:?]
	at aya.a(SourceFile:468) [1.8.8.jar:?]
	at axu.k(SourceFile:413) [1.8.8.jar:?]
	at axu.p(SourceFile:390) [1.8.8.jar:?]
	at ave.s(SourceFile:1498) [1.8.8.jar:?]
	at ave.av(SourceFile:889) [1.8.8.jar:?]
	at ave.a(SourceFile:325) [1.8.8.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
[13:38:25] [Client thread/ERROR]: Exception reading C:\Users\Scott\AppData\Roaming\.minecraft\saves\SM\level.dat_old
java.util.zip.ZipException: Not in GZIP format
	at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91) ~[?:1.8.0_25]
	at dx.a(SourceFile:13) ~[1.8.8.jar:?]
	at atn.c(SourceFile:73) [1.8.8.jar:?]
	at atk.b(SourceFile:52) [1.8.8.jar:?]
	at axv.f(SourceFile:87) [1.8.8.jar:?]
	at axv.b(SourceFile:59) [1.8.8.jar:?]
	at axu.a(SourceFile:376) [1.8.8.jar:?]
	at ave.a(SourceFile:819) [1.8.8.jar:?]
	at aya.a(SourceFile:215) [1.8.8.jar:?]
	at axu.a(SourceFile:350) [1.8.8.jar:?]
	at aya.a(SourceFile:468) [1.8.8.jar:?]
	at axu.k(SourceFile:413) [1.8.8.jar:?]
	at axu.p(SourceFile:390) [1.8.8.jar:?]
	at ave.s(SourceFile:1498) [1.8.8.jar:?]
	at ave.av(SourceFile:889) [1.8.8.jar:?]
	at ave.a(SourceFile:325) [1.8.8.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
[13:38:33] [Client thread/ERROR]: Exception reading C:\Users\Scott\AppData\Roaming\.minecraft\saves\SM\level.dat
java.util.zip.ZipException: Not in GZIP format
	at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91) ~[?:1.8.0_25]
	at dx.a(SourceFile:13) ~[1.8.8.jar:?]
	at atn.c(SourceFile:62) [1.8.8.jar:?]
	at atk.b(SourceFile:52) [1.8.8.jar:?]
	at axv.f(SourceFile:87) [1.8.8.jar:?]
	at axv.b(SourceFile:59) [1.8.8.jar:?]
	at axu.a(SourceFile:376) [1.8.8.jar:?]
	at ave.a(SourceFile:819) [1.8.8.jar:?]
	at axv.a(SourceFile:191) [1.8.8.jar:?]
	at awy.a(SourceFile:50) [1.8.8.jar:?]
	at axu.a(SourceFile:350) [1.8.8.jar:?]
	at axu.k(SourceFile:413) [1.8.8.jar:?]
	at axu.p(SourceFile:390) [1.8.8.jar:?]
	at ave.s(SourceFile:1498) [1.8.8.jar:?]
	at ave.av(SourceFile:889) [1.8.8.jar:?]
	at ave.a(SourceFile:325) [1.8.8.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
[13:38:33] [Client thread/ERROR]: Exception reading C:\Users\Scott\AppData\Roaming\.minecraft\saves\SM\level.dat_old
java.util.zip.ZipException: Not in GZIP format
	at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91) ~[?:1.8.0_25]
	at dx.a(SourceFile:13) ~[1.8.8.jar:?]
	at atn.c(SourceFile:73) [1.8.8.jar:?]
	at atk.b(SourceFile:52) [1.8.8.jar:?]
	at axv.f(SourceFile:87) [1.8.8.jar:?]
	at axv.b(SourceFile:59) [1.8.8.jar:?]
	at axu.a(SourceFile:376) [1.8.8.jar:?]
	at ave.a(SourceFile:819) [1.8.8.jar:?]
	at axv.a(SourceFile:191) [1.8.8.jar:?]
	at awy.a(SourceFile:50) [1.8.8.jar:?]
	at axu.a(SourceFile:350) [1.8.8.jar:?]
	at axu.k(SourceFile:413) [1.8.8.jar:?]
	at axu.p(SourceFile:390) [1.8.8.jar:?]
	at ave.s(SourceFile:1498) [1.8.8.jar:?]
	at ave.av(SourceFile:889) [1.8.8.jar:?]
	at ave.a(SourceFile:325) [1.8.8.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
[13:38:35] [Client thread/INFO]: Deleting level New World
[13:38:35] [Client thread/INFO]: Attempt 1...
[13:38:35] [Client thread/ERROR]: Exception reading C:\Users\Scott\AppData\Roaming\.minecraft\saves\SM\level.dat
java.util.zip.ZipException: Not in GZIP format
	at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91) ~[?:1.8.0_25]
	at dx.a(SourceFile:13) ~[1.8.8.jar:?]
	at atn.c(SourceFile:62) [1.8.8.jar:?]
	at atk.b(SourceFile:52) [1.8.8.jar:?]
	at axv.f(SourceFile:87) [1.8.8.jar:?]
	at axv.a(SourceFile:186) [1.8.8.jar:?]
	at awy.a(SourceFile:50) [1.8.8.jar:?]
	at axu.a(SourceFile:350) [1.8.8.jar:?]
	at axu.k(SourceFile:413) [1.8.8.jar:?]
	at axu.p(SourceFile:390) [1.8.8.jar:?]
	at ave.s(SourceFile:1498) [1.8.8.jar:?]
	at ave.av(SourceFile:889) [1.8.8.jar:?]
	at ave.a(SourceFile:325) [1.8.8.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
[13:38:35] [Client thread/ERROR]: Exception reading C:\Users\Scott\AppData\Roaming\.minecraft\saves\SM\level.dat_old
java.util.zip.ZipException: Not in GZIP format
	at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91) ~[?:1.8.0_25]
	at dx.a(SourceFile:13) ~[1.8.8.jar:?]
	at atn.c(SourceFile:73) [1.8.8.jar:?]
	at atk.b(SourceFile:52) [1.8.8.jar:?]
	at axv.f(SourceFile:87) [1.8.8.jar:?]
	at axv.a(SourceFile:186) [1.8.8.jar:?]
	at awy.a(SourceFile:50) [1.8.8.jar:?]
	at axu.a(SourceFile:350) [1.8.8.jar:?]
	at axu.k(SourceFile:413) [1.8.8.jar:?]
	at axu.p(SourceFile:390) [1.8.8.jar:?]
	at ave.s(SourceFile:1498) [1.8.8.jar:?]
	at ave.av(SourceFile:889) [1.8.8.jar:?]
	at ave.a(SourceFile:325) [1.8.8.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
[13:38:35] [Client thread/ERROR]: Exception reading C:\Users\Scott\AppData\Roaming\.minecraft\saves\SM\level.dat
java.util.zip.ZipException: Not in GZIP format
	at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91) ~[?:1.8.0_25]
	at dx.a(SourceFile:13) ~[1.8.8.jar:?]
	at atn.c(SourceFile:62) [1.8.8.jar:?]
	at atk.b(SourceFile:52) [1.8.8.jar:?]
	at axv.f(SourceFile:87) [1.8.8.jar:?]
	at axv.b(SourceFile:59) [1.8.8.jar:?]
	at axu.a(SourceFile:376) [1.8.8.jar:?]
	at ave.a(SourceFile:819) [1.8.8.jar:?]
	at axv.a(SourceFile:191) [1.8.8.jar:?]
	at awy.a(SourceFile:50) [1.8.8.jar:?]
	at axu.a(SourceFile:350) [1.8.8.jar:?]
	at axu.k(SourceFile:413) [1.8.8.jar:?]
	at axu.p(SourceFile:390) [1.8.8.jar:?]
	at ave.s(SourceFile:1498) [1.8.8.jar:?]
	at ave.av(SourceFile:889) [1.8.8.jar:?]
	at ave.a(SourceFile:325) [1.8.8.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
[13:38:35] [Client thread/ERROR]: Exception reading C:\Users\Scott\AppData\Roaming\.minecraft\saves\SM\level.dat_old
java.util.zip.ZipException: Not in GZIP format
	at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79) ~[?:1.8.0_25]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91) ~[?:1.8.0_25]
	at dx.a(SourceFile:13) ~[1.8.8.jar:?]
	at atn.c(SourceFile:73) [1.8.8.jar:?]
	at atk.b(SourceFile:52) [1.8.8.jar:?]
	at axv.f(SourceFile:87) [1.8.8.jar:?]
	at axv.b(SourceFile:59) [1.8.8.jar:?]
	at axu.a(SourceFile:376) [1.8.8.jar:?]
	at ave.a(SourceFile:819) [1.8.8.jar:?]
	at axv.a(SourceFile:191) [1.8.8.jar:?]
	at awy.a(SourceFile:50) [1.8.8.jar:?]
	at axu.a(SourceFile:350) [1.8.8.jar:?]
	at axu.k(SourceFile:413) [1.8.8.jar:?]
	at axu.p(SourceFile:390) [1.8.8.jar:?]
	at ave.s(SourceFile:1498) [1.8.8.jar:?]
	at ave.av(SourceFile:889) [1.8.8.jar:?]
	at ave.a(SourceFile:325) [1.8.8.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
[13:39:01] [Server thread/INFO]: Starting integrated minecraft server version 1.8.8
[13:39:01] [Server thread/INFO]: Generating keypair
[13:39:01] [Server thread/INFO]: Converting map!
[13:39:01] [Server thread/INFO]: Scanning folders...
[13:39:01] [Server thread/INFO]: Total conversion count is 0
[13:39:02] [Server thread/INFO]: Preparing start region for level 0
[13:39:03] [Server thread/INFO]: Preparing spawn area: 2%
[13:39:04] [Server thread/INFO]: Preparing spawn area: 4%
[13:39:05] [Server thread/INFO]: Preparing spawn area: 6%
[13:39:06] [Server thread/INFO]: Preparing spawn area: 8%
[13:39:08] [Server thread/INFO]: Preparing spawn area: 10%
[13:39:09] [Server thread/INFO]: Preparing spawn area: 13%
[13:39:10] [Server thread/INFO]: Preparing spawn area: 16%
[13:39:11] [Server thread/INFO]: Preparing spawn area: 18%
[13:39:12] [Server thread/INFO]: Preparing spawn area: 21%
[13:39:13] [Server thread/INFO]: Preparing spawn area: 25%
[13:39:14] [Server thread/INFO]: Preparing spawn area: 28%
[13:39:15] [Server thread/INFO]: Preparing spawn area: 32%
[13:39:16] [Server thread/INFO]: Preparing spawn area: 35%
[13:39:17] [Server thread/INFO]: Preparing spawn area: 39%
[13:39:18] [Server thread/INFO]: Preparing spawn area: 43%
[13:39:19] [Server thread/INFO]: Preparing spawn area: 46%
[13:39:20] [Server thread/INFO]: Preparing spawn area: 51%
[13:39:21] [Server thread/INFO]: Preparing spawn area: 56%
[13:39:22] [Server thread/INFO]: Preparing spawn area: 60%
[13:39:23] [Server thread/INFO]: Preparing spawn area: 64%
[13:39:24] [Server thread/INFO]: Preparing spawn area: 69%
[13:39:25] [Server thread/INFO]: Preparing spawn area: 74%
[13:39:26] [Server thread/INFO]: Preparing spawn area: 79%
[13:39:27] [Server thread/INFO]: Preparing spawn area: 84%
[13:39:28] [Server thread/INFO]: Preparing spawn area: 90%
[13:39:29] [Server thread/INFO]: Preparing spawn area: 95%
[13:39:30] [Server thread/INFO]: Changing view distance to 27, from 10
[13:39:32] [Server thread/INFO]: mitchyb99[local:E:72ef65e8] logged in with entity id 215 at (-189.5, 67.0, 108.5)
[13:39:32] [Server thread/INFO]: mitchyb99 joined the game
[13:42:03] [Server thread/INFO]: Saving and pausing game...
[13:42:03] [Server thread/INFO]: Saving chunks for level 'awesome'/Overworld

migrated 2015-08-25T19:37:25Z

I don't know what I'm supposed to do

migrated 2015-08-25T19:40:28Z

I'm mitchyb99

kumasasa 2015-08-25T19:45:10Z

[13:38:25] [Client thread/ERROR]: Exception reading C:\Users\Scott\AppData\Roaming\.minecraft\saves\SM\level.dat
java.util.zip.ZipException: Not in GZIP format

Your save game is broken.

Nothing we can do here.
You may restore a recent backup.

migrated 2015-09-22T22:14:03Z

Is there not a way to prevent this?