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Hello, I hope tis is the correct place to post this query.
My son has been playing Minecraft locally but today he decided to try playing online. On loading a server game a security message "application's digital signature has an error. Do you want to run the application?" We said yes. The game loaded and everything was fine.
However after finishing the Muliplayer session and going back to the single player local version, the display is all wrong and unplayable - it looks like there is a shadow image of the game's display offset by about 20 pixels.
Can anybody please tell me what has happened and how to get things back to normal? I thought it may have been a Java problem and reinstalled the latest version but this has not fixed the local versions display.
Thanks in advance for any help.
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