My plugin (own dsl language parser) doesn't work under Ultimate version of IDEA 12

My plugin works fine under CommunityEdition. But when I install it  under Ultimate edition and open associated with my dsl file, it craches  with following exception in log:

At the same time file my dsl is opened but everything in it is blurry (even scrollbar), references in text don't work and I can not edit text in window.

2013-09-17 15:59:08,043 [  60798]  ERROR - com.intellij.ide.IdeEventQueue - IntelliJ IDEA 12.1.1  Build #IU-129.239
2013-09-17 15:59:08,043 [  60798]  ERROR - com.intellij.ide.IdeEventQueue - JDK: 1.7.0_17
2013-09-17 15:59:08,043 [  60798]  ERROR - com.intellij.ide.IdeEventQueue - VM: Java HotSpot(TM) 64-Bit Server VM
2013-09-17 15:59:08,043 [  60798]  ERROR - com.intellij.ide.IdeEventQueue - Vendor: Oracle Corporation
2013-09-17 15:59:08,043 [  60798]  ERROR - com.intellij.ide.IdeEventQueue - OS: Windows 7
2013-09-17 15:59:08,043 [  60798]  ERROR - com.intellij.ide.IdeEventQueue - Last Action: GotoDeclaration
2013-09-17  15:59:08,756 [  61511]  ERROR - com.intellij.ide.IdeEventQueue - Error  during dispatching of  java.awt.event.InvocationEvent[INVOCATION_DEFAULT,runnable=javax.swing.RepaintManager$ProcessingRunnable@7efc393c,notifier=null,catchExceptions=false,when=1379419148756]  on sun.awt.windows.WToolkit@1221f459
java.lang.AssertionError: 19
    at com.intellij.openapi.editor.ex.util.SegmentArray.findSegmentIndex(SegmentArray.java:119)
     at  com.intellij.openapi.editor.ex.util.LexerEditorHighlighter$HighlighterIteratorImpl.<init>(LexerEditorHighlighter.java:360)
    at com.intellij.openapi.editor.ex.util.LexerEditorHighlighter.createIterator(LexerEditorHighlighter.java:118)
    at com.intellij.openapi.editor.impl.IterationState.<init>(IterationState.java:122)
    at com.intellij.openapi.editor.impl.EditorImpl.xyToVisualPosition(EditorImpl.java:1070)
    at com.intellij.openapi.editor.impl.EditorImpl.xyToLogicalPosition(EditorImpl.java:1293)
    at com.intellij.openapi.editor.impl.EditorGutterComponentImpl.paint(EditorGutterComponentImpl.java:198)
    at javax.swing.JComponent.paintToOffscreen(JComponent.java:5221)
    at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1512)
    at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1443)
    at javax.swing.RepaintManager.paint(RepaintManager.java:1236)
    at javax.swing.JComponent._paintImmediately(JComponent.java:5169)
    at javax.swing.JComponent.paintImmediately(JComponent.java:4980)
    at javax.swing.RepaintManager$3.run(RepaintManager.java:796)
    at javax.swing.RepaintManager$3.run(RepaintManager.java:784)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:784)
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:757)
    at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:706)
    at javax.swing.RepaintManager.access$1000(RepaintManager.java:62)
    at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1651)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:688)
    at java.awt.EventQueue$3.run(EventQueue.java:686)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
    at com.intellij.ide.IdeEventQueue.d(IdeEventQueue.java:686)
    at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:511)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:334)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)