Getting exception while opening editor in version 14.0

Hi All,

I have created an editor which works fine for versions 12 and 13. when i run the plugin in version 14.0, editor is opening but throwing below exception.

[ 105803]  ERROR - psi.SingleRootFileViewProvider - com.customEditor.editor.CustomVF
java.lang.UnsupportedOperationException: com.customEditor.editor.CustomVF
    at com.intellij.openapi.vfs.VirtualFile.getModificationStamp(VirtualFile.java:639)
    at com.intellij.psi.impl.file.PsiBinaryFileImpl.<init>(PsiBinaryFileImpl.java:52)
    at com.intellij.psi.SingleRootFileViewProvider.createFile(SingleRootFileViewProvider.java:268)
    at com.intellij.psi.SingleRootFileViewProvider.createFile(SingleRootFileViewProvider.java:249)
    at com.intellij.psi.SingleRootFileViewProvider.getPsiInner(SingleRootFileViewProvider.java:157)
    at com.intellij.psi.SingleRootFileViewProvider.getPsi(SingleRootFileViewProvider.java:141)
    at com.intellij.psi.impl.file.impl.FileManagerImpl.findFile(FileManagerImpl.java:366)
    at com.intellij.psi.impl.PsiManagerImpl.findFile(PsiManagerImpl.java:184)
    at com.intellij.lang.properties.editor.ResourceBundleEditorProvider.accept(ResourceBundleEditorProvider.java:43)
    at com.intellij.openapi.fileEditor.impl.FileEditorProviderManagerImpl$2.compute(FileEditorProviderManagerImpl.java:92)
    at com.intellij.openapi.fileEditor.impl.FileEditorProviderManagerImpl$2.compute(FileEditorProviderManagerImpl.java:89)
    at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:917)
    at com.intellij.openapi.fileEditor.impl.FileEditorProviderManagerImpl.getProviders(FileEditorProviderManagerImpl.java:89)
    at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.getAvailableProviders(FileEditorManagerImpl.java:958)
    at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileImpl4(FileEditorManagerImpl.java:766)
    at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileImpl3(FileEditorManagerImpl.java:736)
    at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl$8.run(FileEditorManagerImpl.java:716)
    at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:124)
    at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:99)
    at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:85)
    at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileImpl2(FileEditorManagerImpl.java:713)
    at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileWithProviders(FileEditorManagerImpl.java:654)
    at com.intellij.openapi.fileEditor.ex.FileEditorManagerEx.openFile(FileEditorManagerEx.java:146)
    at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253)
    at java.awt.Component.processMouseEvent(Component.java:6300)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3275)
    at java.awt.Component.processEvent(Component.java:6062)
    at java.awt.Container.processEvent(Container.java:2039)
    at java.awt.Component.dispatchEventImpl(Component.java:4660)
    at java.awt.Container.dispatchEventImpl(Container.java:2097)
    at java.awt.Component.dispatchEvent(Component.java:4488)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4575)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4245)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4166)
    at java.awt.Container.dispatchEventImpl(Container.java:2083)
    at java.awt.Window.dispatchEventImpl(Window.java:2489)
    at java.awt.Component.dispatchEvent(Component.java:4488)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:674)
    at java.awt.EventQueue.access$400(EventQueue.java:81)
    at java.awt.EventQueue$2.run(EventQueue.java:633)
    at java.awt.EventQueue$2.run(EventQueue.java:631)
    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$3.run(EventQueue.java:647)
    at java.awt.EventQueue$3.run(EventQueue.java:645)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:644)
    at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:748)
    at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:573)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:384)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)any
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
[ 105847]  ERROR - psi.SingleRootFileViewProvider - IntelliJ IDEA 14.0.1  Build #IC-139.225.3
[ 105848]  ERROR - psi.SingleRootFileViewProvider - JDK: 1.6.0_39
[ 105849]  ERROR - psi.SingleRootFileViewProvider - VM: Java HotSpot(TM) 64-Bit Server VM
[ 105850]  ERROR - psi.SingleRootFileViewProvider - Vendor: Sun Microsystems Inc.
[ 105851]  ERROR - psi.SingleRootFileViewProvider - OS: Windows 8
[ 105851]  ERROR - psi.SingleRootFileViewProvider - Last Action:  
[ 105852]  ERROR - psi.SingleRootFileViewProvider - Current Command:


can anyone help me to resolve this exception.

Thanks in advance.