# Error while trying to record scenario in "gatling-charts-highcharts-2.0.0-RC4"

**URL:** <https://community.gatling.io/t/error-while-trying-to-record-scenario-in-gatling-charts-highcharts-2-0-0-rc4/1394>\
**Category:** Gatling (Open-Source)\
**Created:** [September 10, 2014, 7:03am UTC](https://community.gatling.io/t/error-while-trying-to-record-scenario-in-gatling-charts-highcharts-2-0-0-rc4/1394 "2014-09-10T07:03:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![yarlagadda\_ramya](https://avatars.discourse-cdn.com/v4/letter/y/f17d59/32.png) [@yarlagadda\_ramya](https://community.gatling.io/u/yarlagadda_ramya)\
**Post date:** [September 10, 2014, 7:03am UTC](https://community.gatling.io/t/error-while-trying-to-record-scenario-in-gatling-charts-highcharts-2-0-0-rc4/1394/1 "2014-09-10T07:03:34Z")

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Hi all,

Downloaded latest release of gatling . “gatling-charts-highcharts-2.0.0-RC4”

When am trying to open the recorder from bin, getting this error:

GATLING\_HOME is set to “D:\Softwares\Downloads\gatling-charts-highcharts-2.0.0-RC4”  
Exception in thread “main” java.lang.UnsupportedClassVersionError: io/gatling/recorder/GatlingRecorder : Unsupported major.minor version 51.0  
at java.lang.ClassLoader.defineClass1(Native Method)  
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)  
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)  
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)  
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)  
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)  
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)  
at java.security.AccessController.doPrivileged(Native Method)  
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)  
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)  
Could not find the main class: io.gatling.recorder.GatlingRecorder. Program will exit.  
Press any key to continue . . .

Please help in resolving this issue.

Thanks & Regards,  
Ramya

 ![Gatling_Error.png](https://europe1.discourse-cdn.com/flex013/uploads/gatling2/original/1X/73dada06a2c9da47354af434d8a698bd1ad8afe9.png)

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**Author:** ![Excilys](https://avatars.discourse-cdn.com/v4/letter/e/8797f3/32.png) [@Excilys](https://community.gatling.io/u/Excilys)\
**Post date:** [September 10, 2014, 7:32am UTC](https://community.gatling.io/t/error-while-trying-to-record-scenario-in-gatling-charts-highcharts-2-0-0-rc4/1394/2 "2014-09-10T07:32:33Z")

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Unsupported major.minor version 51.0 means the java program you’re using is compiled against JDK7 but you’re using an older version.

Indeed, Gatling requires at least JDK7u6: [http://gatling.io/docs/2.0.0-RC4/general/operations.html#java-version](http://gatling.io/docs/2.0.0-RC4/general/operations.html#java-version)