Unsupported major.minor version 51.0

  • Hi guys,

    I am trying to synchronise with my KUKA controller (for KUKA iiwa 14 robot) then i got the following issue popping up in the HMI:

    Unsupported major.minor version 51.0

    Anybody knows how to solve it?

    Would pretty much appreciate it!


  • [size=2]just the message number..?[/size]

    [size=2]how about Sunrise OS version?[/size]
    [size=2]how about SunriseWorkBench version?[/size]

    1) read pinned topic: READ FIRST...

    2) if you have an issue with robot, post question in the correct forum section... do NOT contact me directly

    3) read 1 and 2

  • Thanks for your answer.

    Kind of made it work.

    A work-around; By changing the compiler version (see attachment) to 1.6. I remember however in the past I did not use project specific settings.

    If this is the case, I draft the idea that the Java runtime is running in the KUKA controller and from our side we have a sort of different pre-compiler. Is there any way we can update the controller Java version? Does this make sense?

    My Sunrise Workbench - :merci:

    Anyway, hope this is useful if anybody finds the same error.


  • It is not possible to update the Java-Version.
    If there would be an update to another version there would be incompatibilities.

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