React gives Java error

I have JChem on Mac OS X 10.5.7  and with latest Java update.

Here is what i see in Java Preferences:

Java Applications

J2SE 5.0 32-bit

Java SE 6 64-bit

J2SE 5.0 64-bit

J2SE 1.4.2 32-bit

and when I run "react" in command line i get the following:

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at javax.swing.ImageIcon.<init>(ImageIcon.java:138)
    at chemaxon.alchemist.utils.AlchemistLabel.refreshIcon(Unknown Source)
    at chemaxon.alchemist.utils.AlchemistLabel.initialize(Unknown Source)
    at chemaxon.alchemist.utils.AlchemistLabel.<init>(Unknown Source)
    at chemaxon.alchemist.Alchemist.getLicenseLabel(Unknown Source)
    at chemaxon.alchemist.Alchemist.setProgressObjects(Unknown Source)
    at chemaxon.alchemist.AlchemistController.initAlchemist(Unknown Source)
    at chemaxon.alchemist.reactor.ReactorAlchemistController.<init>(Unknown Source)
    at chemaxon.alchemist.reactor.ReactorAlchemistController.<init>(Unknown Source)
    at chemaxon.alchemist.reactor.ReactorAlchemistController.<init>(Unknown Source)
    at chemaxon.alchemist.reactor.ReactorAlchemist.createAndShowGUI(Unknown Source)
    at chemaxon.alchemist.reactor.ReactorAlchemist$1.run(Unknown Source)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
    at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

any suggestions?

Thanks.

 

We've had a resource problem in 5.2.3 and this cause your problem

It has been fixed in 5.2.3.1.

Please update JChem to 5.2.3.1

If you still have problems after the update please notify us.