[news.eclipse.tools] How do I debug plugin class loading problem

[eyuen@xxxxxxxxxx (Elson Yuen)]

I have tried to debug a plugin class loading problem.  I set the -debug
options when launching the workbench and added .options file with the line
"com.ibm.eclipse.core.runtim/loader/debug/activateplugin=true".  The
options file is put under the eclipse workbench directory, i.e. the
working directory of starting the workbench.  However, I don't see any
trace messages displayed.

What is the recommended way to figure out some class loading problem when
the plugin fails to load some classes?

Thanks,
Elson