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MC-5672

Crash when trying to convert an old world

Minecraft crashes when trying to convert Skylands 1.3.

The map can be downloaded from here : http://www.minecraftforum.net/topic/35387-survskylands-13-custom-world-thats-entirely-abandoned/

A crash report is attached.

Description: Reading NBT data
java.lang.ClassCastException: bx cannot be cast to bz
	at bq.f(SourceFile:134)
	at aah.a(SourceFile:30)
	at ahs.a(SourceFile:210)
	at ahs.a(SourceFile:181)
	at ahs.a(SourceFile:140)
	at net.minecraft.server.MinecraftServer.b(SourceFile:394)
	at bdz.a(SourceFile:54)
	at bdz.c(SourceFile:99)
	at net.minecraft.server.MinecraftServer.run(SourceFile:588)
	at fy.run(SourceFile:849)

Linked issues

Attachments

Comments 4

Lots of older maps do this.

Even if lots of older maps do this, i would say that all these maps are corrupted.

The error

-- Corrupt NBT tag --
Details:
	Tag type found: INT
	Tag type expected: LONG
	Tag name: LastUpdate
	Tag parent: Level

The description of the tag LastUpdate in wiki:Chunk Format and wiki:Alpha Level Format shows that this tag is and always was a LONG and never an INT.

So this isn't a Minecraft issue, it's an issue of the creators of this worlds.

Invalid due to buggy 3rd party software.

http://puu.sh/3wRi3.zip is a world which has this problem which has never been used with third-party software.

Nicolas Joyard

(Unassigned)

Unconfirmed

Minecraft 1.4.6, Minecraft 1.6.4

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