[MC-6601] Installed update failure: world's all deleted

I logged on and received a notification to update Minecraft. Upon downloading the update, I logged on and clicked 'singleplayer" as usual and discovered that all my worlds had disappeared.

Is there a way that they can be restored?

thanks for your help.

Linked issues

is duplicated by 1

MC-7206 I have a world called the end is epic but it dissapeared with the new update. Resolved

Comments 5

Tails 2013-01-08T16:38:07Z

Please do not mark issues as private, unless your bug report is a security issue containing information that may compromise your server/client.

Tails 2013-01-08T16:38:24Z

Please force a crash by pressing F3 + C for 10 seconds while ingame and attach the crash report here.

kumasasa 2013-01-08T19:26:45Z

When did you do the previous update ?
Are the worlds very old (last save with < Beta 1.3) ?

kumasasa 2013-01-12T06:37:26Z

Deleted (vanished from harddisk) or disappeared (not in the world list when opening a game) ?

Anon Ymus 2013-02-05T01:43:28Z

Please attached a zipped version of your .minecraft/saves folder or at least write what folders are found inside it.