ok i had the same code come up for me and the answer is as simple as it get.. go download it again and run it. i downloaded it from http://www.minecraft.net/download just go there download it and enjoy!
Ok so now that this new update is out i cant get on to my favorite server. it doesnt even let me get into the sever it just gives me this message. I didn't get the new update because i know the server isnt updated yet. So i still have 1.2.5 and so does the server. I can log into other servers fine but not this one. Can anyone help me out?
Figured it out I bet the server is running 1.3 and you are running 1.2.5, or vice versa.I have had this problem, and after ~10 minutes I realized that all the 1.2.5 servers that had yet to update were fine, (I am using 1.2.5 until optifine updates :D), but all the servers that were running 1.3 were giving me this error. Does this fix it for anyone else?
(Yes I know Beat99 said kinda the same thing, but this might be easier to understand.)
Rollback Post to RevisionRollBack
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well i have the same problem but it came after i reinstalled my computer. I know its nothing about the files, becaus i took my .minecraft from my backup but i got the same error. I really dont know what to do, but this is kind of stupid like ****....