Re: InvalidObjectException and Netbeans

This is a crosspost from comp.lang.java.softwaretools. I am
crossposting because I have not received any responses in that group in
4 hours, and I suspect that this is because that group has low
readership.

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I am trying to study the internal working of the free version of JGraph
and example usages found on their web site. I am using Netbeans 5.0.

I was able to create a project and get Netbeans to find all source
files and run the HelloWorld example. However, on many operations
which I attempt I get the following exception:

A javax.jmi.reflect.InvalidObjectException exception has occurred.
. . .

One place I get this message is when I go to javax.swing.imageIcon,
line with
"public ImageIcon (URL location) {"

In Netbeans I do a "Find References" operation on "ImageIcon" and I get
this exception. It is only one of the things I can do to get the
InvalidObjectException.

After reading this description, can anyone tell me what (if anything) I
should do to eliminate this problem?