Hi Taka,
Here is the stack trace:
012-11-13 14:51:41,564 DEBUG AWT-EventQueue-0 MarvinRenderer : Error while rendering structure
chemaxon.formats.MolFormatException: Can't read molecule from input.
at chemaxon.formats.MolImporter.importMol(MolImporter.java:1296)
at chemaxon.formats.MolImporter.importMol(MolImporter.java:1485)
at jp.co.infocom.cheminfo.marvin.renderer.MarvinRenderer.createMol(MarvinRenderer.java:493)
at jp.co.infocom.cheminfo.marvin.renderer.MarvinRenderer.setValue(MarvinRenderer.java:71)
at org.knime.core.data.renderer.AbstractPainterDataValueRenderer.getTableCellRendererComponent(AbstractPainterDataValueRenderer.java:203)
at org.knime.core.data.renderer.DefaultDataValueRendererFamily.getTableCellRendererComponent(DefaultDataValueRendererFamily.java:220)
at org.knime.core.data.renderer.SetOfRendererFamilies.getTableCellRendererComponent(SetOfRendererFamilies.java:141)
at javax.swing.JTable.prepareRenderer(JTable.java:5720)
at org.knime.core.node.tableview.TableContentView.prepareRenderer(TableContentView.java:286)
at javax.swing.plaf.basic.BasicTableUI.paintCell(BasicTableUI.java:2072)
at javax.swing.plaf.basic.BasicTableUI.paintCells(BasicTableUI.java:1974)
at javax.swing.plaf.basic.BasicTableUI.paint(BasicTableUI.java:1770)
at javax.swing.plaf.ComponentUI.update(ComponentUI.java:143)
at javax.swing.JComponent.paintComponent(JComponent.java:752)
at javax.swing.JComponent.paint(JComponent.java:1029)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5124)
at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:278)
at javax.swing.RepaintManager.paint(RepaintManager.java:1224)
at javax.swing.JComponent.paintForceDoubleBuffered(JComponent.java:1065)
at javax.swing.JViewport.paintView(JViewport.java:1633)
at javax.swing.JViewport.windowBlitPaint(JViewport.java:1564)
at javax.swing.JViewport.setViewPosition(JViewport.java:1118)
at javax.swing.plaf.basic.BasicScrollPaneUI$Handler.vsbStateChanged(BasicScrollPaneUI.java:1029)
at javax.swing.plaf.basic.BasicScrollPaneUI$Handler.stateChanged(BasicScrollPaneUI.java:1018)
at javax.swing.DefaultBoundedRangeModel.fireStateChanged(DefaultBoundedRangeModel.java:348)
at javax.swing.DefaultBoundedRangeModel.setRangeProperties(DefaultBoundedRangeModel.java:285)
at javax.swing.DefaultBoundedRangeModel.setValue(DefaultBoundedRangeModel.java:151)
at javax.swing.JScrollBar.setValue(JScrollBar.java:446)
at javax.swing.plaf.basic.BasicScrollBarUI$TrackListener.setValueFrom(BasicScrollBarUI.java:1220)
at javax.swing.plaf.basic.BasicScrollBarUI$TrackListener.mouseDragged(BasicScrollBarUI.java:1162)
at java.awt.Component.processMouseMotionEvent(Component.java:6315)
at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3285)
at java.awt.Component.processEvent(Component.java:6036)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4255)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
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)
2012-11-13 14:51:41,580 WARN AWT-EventQueue-0 MarvinRenderer : Error while rendering structure
When I tested this out by manually calling a trivial example : MolIMporter.importMol(", this worked however using MolIMporter.importMol("C>>O", MFileFormat.RXN.getName()) failes with the above exception.
Hope that helps
Luke.