One-electron Arrows from Monovalent Radicals

Drawing one-electron arrows from monovalent radicals is causing MarvinSketch 5.3.1 (both desktop and applet versions) to freeze. I've been able to reproduce this bug on OS X Leopard and Snow Leopard. After clicking to place a one-electron arrow, the program freezes up and no buttons are click-able.

As a workaround, for anyone experiencing this problem, you can draw the one-electron arrow first then convert its source atom to a monovalent radical with no problems.

Indeed, MarvinSketch is throwing exceptions after drawing an electron flow from a monovalent.

It is not a Mac specific problem. I could reproduce it under other platforms.

Thanks for the bug report. We will fix it.

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException


	at chemaxon.struc.graphics.MEFlowBasePoint.getLocation(Unknown Source)


	at chemaxon.struc.graphics.MPolyline.connect(Unknown Source)


	at chemaxon.struc.graphics.MPolyline.paint(Unknown Source)


	at chemaxon.struc.MObject.paint(Unknown Source)


	at chemaxon.marvin.paint.internal.MolPainter.paintObjects(Unknown Source)


	at chemaxon.marvin.paint.internal.MolPainter.paintDocument(Unknown Source)


	at chemaxon.marvin.paint.internal.MolPainter.paintDocument(Unknown Source)


	at chemaxon.marvin.sketch.MolEditor.paint(Unknown Source)


	at chemaxon.marvin.sketch.swing.SketchCanvas.paintGraphics(Unknown Source)


	at chemaxon.marvin.sketch.swing.SketchCanvas.paint(Unknown Source)

It is fixed, and the fix is going to be included in the next patch release.

Thanks,

Eva