''PATCH REQUIRED'' Problem.

Hello everyone, today came across the problem. After logging in my acc on wtolk Lordaeron server, i see ''Downloading update'' window. And after a few minutes i get ''Patch Required, press the restart button blow to exit World of Warcraft and download the patch."
But i cant find any info about updates for wtolk clients.
Any suggestions how to solve this little problem? Of course i could just redownload the game, but with my 20mb/s download speed its one of the worst options i guess.
Thanks for any help, ill be waiting for replies.

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