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sierra bug; macpro 6.1 bug; graphic card bug

  1. Riwam

    Need help:Photo-Mediathek makes jump the whole Desktop (MP6.1 Sierra)

    Any help of a person with more knowledge that the little I have will be appreciated.:) If i go in this way: MacHarddisk -> My user name Folder -> Pictures -> Photo-Mediathek the whole desktop with any other open windows begins madly to blink and the title bar shifts continuously between the...