Getting IncompatibleClassChangeError while deploying EAR to WAS8.5 via Jenkins using GitHub

I have Jenkins version 1.611, JDK 1.7 and remote WAS8.5 running on JDK 1.6 version. When I try to deploy an EAR or WAR file using Github (i.e. I run a project from Eclipse Luna with java 7 config) Iam encounters the following error:

Connecting to IBM WebSphere Application Server...
The following artifacts will be deployed in this order...

-------------------------------------------
SpringWSEAR.ear
-------------------------------------------
Error deploying to IBM WebSphere Application Server: org.jenkinsci.plugins.websphere.services.deployment.DeploymentServiceException: 
    at org.jenkinsci.plugins.websphere.services.deployment.WebSphereDeploymentService.getAppName(WebSphereDeploymentService.java:122)
    at org.jenkinsci.plugins.websphere.services.deployment.WebSphereDeploymentService.getAppName(WebSphereDeploymentService.java:98)
    at org.jenkinsci.plugins.websphere_deployer.WebSphereDeployerPlugin.getAppName(WebSphereDeployerPlugin.java:268)
    at org.jenkinsci.plugins.websphere_deployer.WebSphereDeployerPlugin.createArtifact(WebSphereDeployerPlugin.java:226)
    at org.jenkinsci.plugins.websphere_deployer.WebSphereDeployerPlugin.perform(WebSphereDeployerPlugin.java:168)
    at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:45)
    at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:764)
    at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:724)
    at hudson.model.Build$BuildExecution.post2(Build.java:185)
    at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:671)
    at hudson.model.Run.execute(Run.java:1769)
    at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
    at hudson.model.ResourceController.execute(ResourceController.java:98)
    at hudson.model.Executor.run(Executor.java:374)
Caused by: com.ibm.websphere.management.application.client.AppDeploymentException:  [Root exception is java.lang.IncompatibleClassChangeError: Implementing class]
    at com.ibm.websphere.management.application.AppManagementFactory.handleException(AppManagementFactory.java:672)
    at com.ibm.websphere.management.application.AppManagementFactory.readArchive(AppManagementFactory.java:141)
    at com.ibm.websphere.management.application.AppManagementFactory.readArchive(AppManagementFactory.java:91)
    at com.ibm.websphere.management.application.client.AppDeploymentController.readArchive(AppDeploymentController.java:254)
    at org.jenkinsci.plugins.websphere.services.deployment.WebSphereDeploymentService.getAppName(WebSphereDeploymentService.java:108)
    ... 13 more
Caused by: java.lang.IncompatibleClassChangeError: Implementing class
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1139)
    at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:799)
    at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1310)
    at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1366)
    at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1326)
    at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1079)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1139)
    at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:799)
    at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1310)
    at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1366)
    at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1326)
    at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1079)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at org.eclipse.jst.j2ee.commonarchivecore.internal.impl.WARFileImpl.getWARFileAnnotationsDetector(WARFileImpl.java:2908)
    at org.eclipse.jst.j2ee.commonarchivecore.internal.impl.WARFileImpl.containsEJBContent(WARFileImpl.java:1975)
    at com.ibm.ws.management.application.client.AppInstallHelper.checkForXmiFiles(AppInstallHelper.java:1372)
    at com.ibm.ws.management.application.client.AppInstallHelper.checkForXmiFiles(AppInstallHelper.java:1331)
    at com.ibm.ws.management.application.client.AppInstallHelper.checkForEE5Restrictions(AppInstallHelper.java:512)
    at com.ibm.ws.management.application.client.AppInstallHelper.checkForEE5Restrictions(AppInstallHelper.java:477)
    at com.ibm.ws.management.application.client.AppInstallHelper.getAppDeploymentInfo(AppInstallHelper.java:563)
    at com.ibm.websphere.management.application.AppManagementFactory.readArchive(AppManagementFactory.java:129)
    ... 16 more

Build step 'Deploy To IBM WebSphere Application Server' changed build result to FAILURE
Finished: FAILURE

      

        
        
        
      

    

Are there any version differences between eclipse or jenkins or WAS ??? Any help would be greatly appreciated ...