The http://prdownloads.sourceforge.net/jython/jython-21.class does not work properly with MacOSX 10.3

The installer starts, states the JVM is OK, prompts for a directory and  hangs when beginning to copy files (I suppose there shoud be some sort of progress bar, but nothing happens).

I dezipped the class file, but I do not know how to change and use the


does not work.

Thank you for any help

Yves Surrel