http://www.alh.net/newlisp/phpbb/viewtopic.php?t=634
I did a uninstall of my TCL 8.4.X installation.
After a fresh install of current activestate 8.5 newlisp-tk.tcl does not work because of the missing bwidget lib.
I downloaded the latest bwidget 1.8 zip and installed it to C:\Tcl\lib.
Then newlisp-tk.tcl 1.39 (last from 9.1.5) does work again.
The only visual difference is the new TCL icon:
