#8823 Changes Bar error

Got this after doing a CVS rollback on a file:

com.anecdote.ideaplugins.changesbar.ChangesBarProjectComponent.changesRemoved(Ljava/util/Collection;Lcom/intellij/openapi/vcs/changes/ChangeList;)V
java.lang.AbstractMethodError: com.anecdote.ideaplugins.changesbar.ChangesBarProjectComponent.changesRemoved(Ljava/util/Collection;Lcom/intellij/openapi/vcs/changes/ChangeList;)V
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.util.EventDispatcher.dispatch(EventDispatcher.java:87)
at com.intellij.util.EventDispatcher.access$100(EventDispatcher.java:33)
at com.intellij.util.EventDispatcher$1.invoke(EventDispatcher.java:64)
at $Proxy47.changesRemoved(Unknown Source)
at com.intellij.openapi.vcs.changes.ChangeListManagerImpl$10.run(ChangeListManagerImpl.java:14)
at com.intellij.openapi.vcs.changes.ChangeListManagerImpl$3$1.run(ChangeListManagerImpl.java:2)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at com.intellij.ide.IdeEventQueue.c(IdeEventQueue.java:145)
at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:212)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:101)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)



java.lang.AbstractMethodError: com.anecdote.ideaplugins.changesbar.ChangesBar.changesRemoved(Ljava/util/Collection;Lcom/intellij/openapi/vcs/changes/ChangeList;)V
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.util.EventDispatcher.dispatch(EventDispatcher.java:87)
at com.intellij.util.EventDispatcher.access$100(EventDispatcher.java:33)
at com.intellij.util.EventDispatcher$1.invoke(EventDispatcher.java:64)
at $Proxy47.changesRemoved(Unknown Source)
at com.intellij.openapi.vcs.changes.ChangeListManagerImpl$10.run(ChangeListManagerImpl.java:14)
at com.intellij.openapi.vcs.changes.ChangeListManagerImpl$3$1.run(ChangeListManagerImpl.java:2)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at com.intellij.ide.IdeEventQueue.c(IdeEventQueue.java:145)
at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:212)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:101)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)