# Getting .UnsupportedClassVersionError: io/appium/java\_client/AppiumDriver : Unsupported major.minor version 51.0" error when instantiating AppiumDriver object

**URL:** <https://discuss.appium.io/t/getting-unsupportedclassversionerror-io-appium-java-client-appiumdriver-unsupported-major-minor-version-51-0-error-when-instantiating-appiumdriver-object/296>\
**Category:** Support\
**Created:** [September 11, 2014, 12:38am UTC](https://discuss.appium.io/t/getting-unsupportedclassversionerror-io-appium-java-client-appiumdriver-unsupported-major-minor-version-51-0-error-when-instantiating-appiumdriver-object/296 "2014-09-11T00:38:10Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![igal\_epshtein](https://discuss.appium.io/user_avatar/discuss.appium.io/igal_epshtein/32/5422_2.png) [@igal\_epshtein](https://discuss.appium.io/u/igal_epshtein)\
**Post date:** [March 12, 2015, 4:33pm UTC](https://discuss.appium.io/t/getting-unsupportedclassversionerror-io-appium-java-client-appiumdriver-unsupported-major-minor-version-51-0-error-when-instantiating-appiumdriver-object/296/4 "2015-03-12T16:33:06Z")

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pls see the question I put

> [@Io/appium/java\_client/MobileElement : Unsupported major.minor version 51.0](https://discuss.appium.io/t/io-appium-java-client-mobileelement-unsupported-major-minor-version-51-0/3338):
>
> Not sure if it related to Appium , but I’ll try… I have appium test wich is wrapped by jbehave , which is being executed by maven. if I’m executing the test by “mvn clean install” – works fine… if I put the execution to some script file and running it – works fine… The problem starts when I’ve tried to execute the script by using launchd (MAC task scheduler) I’m getting the next error : INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [I…

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