Error editing a file

[jerolba]

I get this error creating a new file. I tested with 10CE , and 10.5CE versions

java.lang.NoClassDefFoundError: com/intellij/psi/impl/source/tree/PlainTextFileElement at coffeescript.lang.ParserDefinition$1.parse(Unknown Source) at com.intellij.psi.tree.IFileElementType.parseContents(IFileElementType.java:41) at com.intellij.psi.impl.source.tree.LazyParseableElement.ensureParsed(LazyParseableElement.java:177) at com.intellij.psi.impl.source.tree.LazyParseableElement.getFirstChildNode(LazyParseableElement.java:218) at com.intellij.psi.impl.source.tree.LazyParseableElement.getFirstChildNode(LazyParseableElement.java:32) at com.intellij.psi.impl.source.tree.SharedImplUtil.getFirstChild(SharedImplUtil.java:47) at com.intellij.psi.impl.source.PsiFileImpl.getFirstChild(PsiFileImpl.java:704) at com.intellij.psi.SingleRootFileViewProvider.findElementAt(SingleRootFileViewProvider.java:388) at com.intellij.psi.SingleRootFileViewProvider.findElementAt(SingleRootFileViewProvider.java:343) at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.findInjectedElementNoCommitWithOffset(InjectedLanguageUtil.java:246) at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.findInjectedElementNoCommit(InjectedLanguageUtil.java:257) at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.findInjectedPsiNoCommit(InjectedLanguageUtil.java:171) at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.getEditorForInjectedLanguageNoCommit(InjectedLanguageUtil.java:147) at com.intellij.codeInsight.navigation.CtrlMouseHandler$5.mouseMoved(CtrlMouseHandler.java:159) 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:89) at com.intellij.util.EventDispatcher.access$100(EventDispatcher.java:34) at com.intellij.util.EventDispatcher$1.invoke(EventDispatcher.java:65) at $Proxy22.mouseMoved(Unknown Source) at com.intellij.openapi.editor.impl.EditorImpl$MyMouseMotionListener.mouseMoved(EditorImpl.java:5023) at java.awt.Component.processMouseMotionEvent(Component.java:6419) at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3285) at java.awt.Component.processEvent(Component.java:6143) at java.awt.Container.processEvent(Container.java:2085) at java.awt.Component.dispatchEventImpl(Component.java:4736) at java.awt.Container.dispatchEventImpl(Container.java:2143) at java.awt.Component.dispatchEvent(Component.java:4566) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4621) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4295) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4212) at java.awt.Container.dispatchEventImpl(Container.java:2129) at java.awt.Window.dispatchEventImpl(Window.java:2478) at java.awt.Component.dispatchEvent(Component.java:4566) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:680) at java.awt.EventQueue.access$000(EventQueue.java:86) at java.awt.EventQueue$1.run(EventQueue.java:639) at java.awt.EventQueue$1.run(EventQueue.java:637) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98) at java.awt.EventQueue$2.run(EventQueue.java:653) at java.awt.EventQueue$2.run(EventQueue.java:651) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.awt.EventQueue.dispatchEvent(EventQueue.java:650) at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:661) at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:510) at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:410) at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:368) 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)