Message5433

I was able to grab a VMware image of Windows 7 RC.
Installed Java SE 6 (Update 17).
Installed jython.
Opened a console window (cmd.exe)
cd to the jython 2.5.1 installation dir, and typed 'jython'
This gave me:
C:\Users\bagside\stuff\jython\jython-2.5.1>jython
*sys-package-mgr*: processing new jar, 'C:\Users\bagside\stuff\jython\jython-2.5.1\jython.jar'
*sys-package-mgr*: processing new jar, 'C:\Program Files\Java\jre6\lib\resources.jar'
*sys-package-mgr*: processing new jar, 'C:\Program Files\Java\jre6\lib\rt.jar'
*sys-package-mgr*: processing new jar, 'C:\Program Files\Java\jre6\lib\jsse.jar'
*sys-package-mgr*: processing new jar, 'C:\Program Files\Java\jre6\lib\jce.jar'
*sys-package-mgr*: processing new jar, 'C:\Program Files\Java\jre6\lib\charsets.jar'
*sys-package-mgr*: processing new jar, 'C:\Program Files\Java\jre6\lib\ext\dnsns.jar'
*sys-package-mgr*: processing new jar, 'C:\Program Files\Java\jre6\lib\ext\localedata.jar'
*sys-package-mgr*: processing new jar, 'C:\Program Files\Java\jre6\lib\ext\sunjce_provider.jar'
*sys-package-mgr*: processing new jar, 'C:\Program Files\Java\jre6\lib\ext\sunmscapi.jar'
*sys-package-mgr*: processing new jar, 'C:\Program Files\Java\jre6\lib\ext\sunpkcs11.jar'
Jython 2.5.1 (Release_2_5_1:6813, Sep 26 2009, 13:47:54)
[Java HotSpot(TM) Client VM (Sun Microsystems Inc.)] on java1.6.0_17
Type "help", "copyright", "credits" or "license" for more information.
>>>

When I double click on the jython.bat file, I get:
'\\BAGSIDE-PC\Users\bagside\stuff\jython\jython-2.5.1'
CMD.EXE was started with the above path as the current directory.
UNC paths are not supported.  Defaulting to Windows directory.
Jython 2.5.1 (Release_2_5_1:6813, Sep 26 2009, 13:47:54)
[Java HotSpot(TM) Client VM (Sun Microsystems Inc.)] on java1.6.0_17
Type "help", "copyright", "credits" or "license" for more information.
>>>

There are 2 
  @echo off 
lines at the beginning of jython.bat
Please comment them out as follows:
  REM @echo off
and then try to start jython.bat from a console window (cmd.exe).
The output could be helpful.