Plugin 'PlantUML integration' failed to initialize and will be disabled. First installation

[r3c130n]

Plugin 'PlantUML integration' failed to initialize and will be disabled. Please restart PhpStorm.

com.intellij.diagnostic.PluginException: org/plantuml/idea/toolwindow/PlantUmlApplicationComponent : Unsupported major.minor version 51.0 [Plugin: PlantUML integration]
at com.intellij.ide.plugins.cl.PluginClassLoader.b(PluginClassLoader.java:130)
at com.intellij.ide.plugins.cl.PluginClassLoader.a(PluginClassLoader.java:77)
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:66)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:249)
at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentsRegistry.a(ComponentManagerImpl.java:422)
at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentsRegistry.a(ComponentManagerImpl.java:412)
at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentsRegistry.access$000(ComponentManagerImpl.java:398)
at com.intellij.openapi.components.impl.ComponentManagerImpl.a(ComponentManagerImpl.java:107)
at com.intellij.openapi.components.impl.ComponentManagerImpl.init(ComponentManagerImpl.java:86)
at com.intellij.openapi.components.impl.stores.ApplicationStoreImpl.load(ApplicationStoreImpl.java:110)
at com.intellij.openapi.application.impl.ApplicationImpl.load(ApplicationImpl.java:510)
at com.intellij.openapi.application.impl.ApplicationImpl.load(ApplicationImpl.java:492)
at com.intellij.idea.IdeaApplication.run(IdeaApplication.java:158)
at com.intellij.idea.MainImpl$1$1$1.run(MainImpl.java:66)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:715)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:685)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:364)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: java.lang.UnsupportedClassVersionError: org/plantuml/idea/toolwindow/PlantUmlApplicationComponent : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.lang.ClassLoader.defineClass(ClassLoader.java:471)
at com.intellij.util.lang.UrlClassLoader._defineClass(UrlClassLoader.java:195)
at com.intellij.util.lang.UrlClassLoader.defineClass(UrlClassLoader.java:191)
at com.intellij.util.lang.UrlClassLoader._findClass(UrlClassLoader.java:167)
at com.intellij.ide.plugins.cl.PluginClassLoader.b(PluginClassLoader.java:124)

[esteinberg]

Turns to be a build issue. Uploaded new build which should work with 1.6 JDK used by Idea by default. Please re-install plugin