IOException: Not a valid PNG file

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    When I try to start the game I am getting a pop up that says IOException: Not a valid PNG file. I have a NVIDIA GeForce Video card and am running windows 7. I uninstalled Java and re-installed it.
     
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    • Tester
    Maybe one of the games assets got corrupted in the download process?
    Try the Options&REpair button on the launcher and hit Download normal ..
    if that doesnt work try a fresh installation in a new folder (simply change the install path under Options->Install settings)