Jenkins Importer fails to load on startup

 ERROR [localhost-startStop-1] [ScanningPluginLoader] Unable to deploy plugin 'com.atlassian.bamboo.plugins.atlassian-bamboo-jenkins-importer' from 'Unit: BAMBOO_INSTALL/atlassian-bamboo/WEB-INF/atlassian-bundled-plugins/atlassian-bamboo-jenkins-importer-5.10.3.jar (1471938061000)'.
 ERROR [localhost-startStop-1] [ScanningPluginLoader] Because of the following exception:
java.lang.IncompatibleClassChangeError: Implementing class
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2541)
	at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:858)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1301)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1166)
	at com.atlassian.plugin.util.ClassLoaderUtils.loadClass(ClassLoaderUtils.java:40)
	at com.atlassian.plugin.osgi.factory.transform.stage.HostComponentSpringStage.addHostComponentsUsedInSuperClasses(HostComponentSpringStage.java:231)
	at com.atlassian.plugin.osgi.factory.transform.stage.HostComponentSpringStage.findUsedHostComponents(HostComponentSpringStage.java:210)
	at com.atlassian.plugin.osgi.factory.transform.stage.HostComponentSpringStage.findUsedHostComponents(HostComponentSpringStage.java:203)
	at com.atlassian.plugin.osgi.factory.transform.stage.HostComponentSpringStage.execute(HostComponentSpringStage.java:65)
	at com.atlassian.plugin.osgi.factory.transform.DefaultPluginTransformer.transform(DefaultPluginTransformer.java:140)
	at com.atlassian.plugin.osgi.factory.OsgiPluginFactory.createOsgiPluginJar(OsgiPluginFactory.java:324)
	at com.atlassian.plugin.osgi.factory.OsgiPluginFactory.create(OsgiPluginFactory.java:225)
	at com.atlassian.plugin.loaders.ScanningPluginLoader.deployPluginFromUnit(ScanningPluginLoader.java:142)
	at com.atlassian.plugin.loaders.ScanningPluginLoader.loadAllPlugins(ScanningPluginLoader.java:87)
	at com.atlassian.plugin.loaders.PermissionCheckingPluginLoader.loadAllPlugins(PermissionCheckingPluginLoader.java:28)
	at com.atlassian.plugin.manager.DefaultPluginManager.earlyStartup(DefaultPluginManager.java:426)
	at com.atlassian.plugin.manager.DefaultPluginManager.init(DefaultPluginManager.java:404)
	at com.atlassian.bamboo.container.BambooContainer.init(BambooContainer.java:211)
	at com.atlassian.bamboo.container.BambooContainer.initialise(BambooContainer.java:196)
	at com.atlassian.bamboo.upgrade.UpgradeLauncher.initialiseBambooContainer(UpgradeLauncher.java:184)
	at com.atlassian.bamboo.upgrade.UpgradeLauncher.upgradeAndStartBamboo(UpgradeLauncher.java:97)
	at com.atlassian.bamboo.upgrade.UpgradeLauncher.contextInitialized(UpgradeLauncher.java:41)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4842)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5303)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1407)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1397)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)