Plugin install error of "eSnippet Pro" on Rubymine 1.1 Follow

I am the author. I use Jdk 1.6 to compile the project. I think you use RubyMine Mac version with Jdk 1.5. I will fix this problem ASAP.

Thank you for your immediate reply.
But, I have also the same error occurred with upgraded to JDK 1.6.
Anyway, you are the author of eSnippet Pro and so I don't worry about that.
I am looking foward to your solution.

Thank you again.

Hyoseong

I too confirm this bug. Here is the complete error message in case it helps debugging. Running in OS X 10.5.7

update failed for AnAction with ID=NewElement: Bad version number in .class file [Plugin: eSnippet Pro plugin]
com.intellij.diagnostic.PluginException: Bad version number in .class file [Plugin: eSnippet Pro plugin]
at com.intellij.openapi.actionSystem.impl.ActionManagerImpl.a(ActionManagerImpl.java:223)
at com.intellij.openapi.actionSystem.impl.ActionManagerImpl.a(ActionManagerImpl.java:2)
at com.intellij.openapi.actionSystem.impl.ActionManagerImpl.getAction(ActionManagerImpl.java:224)
at com.intellij.openapi.actionSystem.DefaultActionGroup.getChildren(DefaultActionGroup.java:242)
at com.intellij.openapi.actionSystem.ActionGroupUtil.isGroupEmpty(ActionGroupUtil.java:37)
at com.intellij.openapi.actionSystem.ActionGroupUtil.isGroupEmpty(ActionGroupUtil.java:33)
at com.intellij.ide.actions.NewElementAction.update(NewElementAction.java:41)
at com.intellij.openapi.actionSystem.impl.Utils.a(Utils.java:33)
at com.intellij.openapi.actionSystem.impl.Utils.expandActionGroup(Utils.java:82)
at com.intellij.openapi.actionSystem.impl.Utils.expandActionGroup(Utils.java:44)
at com.intellij.openapi.actionSystem.impl.Utils.fillMenu(Utils.java:85)
at com.intellij.openapi.actionSystem.impl.ActionMenu.f(ActionMenu.java:54)
at com.intellij.openapi.actionSystem.impl.ActionMenu.access$400(ActionMenu.java:81)
at com.intellij.openapi.actionSystem.impl.ActionMenu$MenuListenerImpl.menuSelected(ActionMenu.java:1)
at javax.swing.JMenu.fireMenuSelected(JMenu.java:1091)
at javax.swing.JMenu$MenuChangeListener.stateChanged(JMenu.java:1184)
at javax.swing.DefaultButtonModel.fireStateChanged(DefaultButtonModel.java:362)
at javax.swing.DefaultButtonModel.setSelected(DefaultButtonModel.java:228)
at javax.swing.JMenu.setSelected(JMenu.java:280)
at apple.laf.ScreenMenu$1.run(ScreenMenu.java:84)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
at apple.awt.CToolkit$CPeerEvent.dispatch(CToolkit.java:1175)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at com.intellij.ide.IdeEventQueue.d(IdeEventQueue.java:13)
at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:90)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:95)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Caused by: java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
at java.lang.ClassLoader.defineClass(ClassLoader.java:520)
at com.intellij.util.lang.UrlClassLoader._defineClass(UrlClassLoader.java:119)
at com.intellij.util.lang.UrlClassLoader.defineClass(UrlClassLoader.java:115)
at com.intellij.util.lang.UrlClassLoader._findClass(UrlClassLoader.java:91)
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClassInsideSelf(PluginClassLoader.java:78)
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:41)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at com.intellij.openapi.actionSystem.impl.ActionManagerImpl.a(ActionManagerImpl.java:295)
... 30 more
 

Thanks!