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Thread: Unsupported major.minor version 49.0

  1. #1
    Join Date
    Feb 2010
    Rep Power

    Default Unsupported major.minor version 49.0

    i have tried to install a zimlet manually (the windows installer somehow didn't worked out for me - it didn't worked as an hta file, and renamed to htm it kind of freezed after "deploying zimlet..")

    followed the next steps:
    1. running Zimbra Desktop

    2. saved zimlet zips into C:\Documents and Settings\Benattar1\Local Settings\Application Data\Zimbra\zdesktop\zimlets

    3. Run:
    C:\Documents and Settings\Benattar1\Local Settings\Application Data\Zimbra\zdesktop>java -cp jetty\lib\log4j-1.2.8.jar;jetty\common\lib\commons-httpclient-3.0.jar;jetty\common\lib\mail.jar;jetty\common\lib \commons-logging.jar;jetty\common\lib\commons-codec-1.3.jar;jetty\common\lib\json.jar;jetty\common\lib \dom4j-1.5.jar;jetty\common\lib\zimbracommon.jar;jetty\we bapps\service\WEB-INF\lib\zimbrastor
    e.jar -Dzimbra.config=conf\localconfig.xml com.zimbra.cs.zimlet.ZimletUtil deploy zimlets\

    ------> result is:

    Exception in thread "main" java.lang.UnsupportedClassVersionError: com/zimbra/cs/zimlet/ZimletUtil (Unsupported major.minor version 49.0)
    at java.lang.ClassLoader.defineClass0(Native Method)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at n Source)
    at Source)
    at$100(Unknown Source)
    at$ Source)
    at Method)
    at Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClassInternal(Unknown Source)

    Any idea

  2. #2
    Join Date
    Nov 2009
    Rep Power


    Confirm which version of Java you are running:

    From cmd prompt, run "java -version".

    And confirm, you are running Zimbra Desktop 1.0?

    Also, a wiki page on deploying zimlets to Zimbra Desktop:

    ZCS 6.0:Zimlet Developers Guideev Environment Setup - Zimbra :: Wiki

  3. #3
    Join Date
    Feb 2010
    Rep Power


    Hi sposetti,

    I can confirm that i am runing Zimbra desktop, 1.0.4, build 1833.
    Following the wiki's advise, I have turned on the logs.

    i have unsuccessfully tried to install manually the asterisk zimlet (which should provide me with Skype IM capabilities no?) on 2 of my stations:

    1. my desktop: was the one that output the above message
    runing Win 2k SP4
    but is now experimenting some issues - so let's forget that

    2. my LT:
    -> seems i've successfully completed the manual installation, but i can't see any change on my zd... (i have stopped and started the service)
    runing win XP SP3
    java -version returns:
    java version "1.6.0_13"
    Java(TM) SE Runtime Environment (build 1.6.0_13-b03)
    Java HotSpot(TM) Client VM (build 11.3-b02, mixed mode, sharing)

    Additionally, note that i have tried to debug the zimlet windowsinstaller hta file and it is a pain (e.g. users like me don't have a Yahoo entry in their registry, it's only "Zimbra desktop bla bla...", and so on and so forth), now the ZDesktop

    any clue?

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