Fatal Java Error after logging in to Minecraft [LOCKED]
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KooperOmega
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I get the error

Fatal Error:
     Error launching World of Minecraft client:
     java.lang.IllegalArgumentException: String length must be a multiple of four.

Help pl0x?

homeslice
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Try This!!

Dood, REDOWNLOAD!!! If that doesn't work, then IDK what you should do... I hope this helped you.

~cvonu42

jumOngzz
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hm...

well i got diff prob when i open World of Minecraft and login the server list search box when i type in it the whole thing freezes

jak2131
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look at the box at the top of every page here

Announcement:

There are a lot of threads showing up lately about the World of Minecraft Client being laggy.

This is due to the issues with the Minecraft.net Server List which should be sorted out soon on their end. We are also taking measures to prevent this from inconveniencing World of Minecraft users in the future.

In the meantime, the client will still launch, it takes a while to initially load. Also avoid using the server filter box in the World of Minecraft Client.

- H4X