Tcl wasn't installed properly

[Steve]

On Mar 10, 11:00 am, MRAB <pyt... at mrabarnett.plus.com> wrote:
> On 10/03/2011 15:39, Steve wrote:
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> > I'm a frequent user of matplotlib on my Windows XP machine.  I
> > recently attempted to install a program that modified my Tcl
> > installation, and I now get an error message when I attempt to plot
> > anything in matplotlib.  Here is the error message:
> > ---
> > Traceback (most recent call last):
> >    File "<stdin>", line 1, in<module>
> >    File "C:\Python25\lib\lib-tk\Tkinter.py", line 3758, in _test
> >      root = Tk()
> >    File "C:\Python25\lib\lib-tk\Tkinter.py", line 1647, in __init__
> >      self.tk = _tkinter.create(screenName, baseName, className,
> > interactive, want
> > objects, useTk, sync, use)
> > _tkinter.TclError: Can't find a usable init.tcl in the following
> > directories:
> >      {C:\Program Files\Tcl\lib\tcl8.3} {C:\Program Files\Tcl\lib
> > \tcl8.3} {C:/Prog
> > ram Files/Tcl/lib/tcl8.4} C:/Python25/lib/tcl8.4 C:/lib/tcl8.4 C:/
> > library
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> > This probably means that Tcl wasn't installed properly.
> > ---
> > I attempted a complete reinstall of python (hoping it would reinstall
> > Tcl with correct file paths), but I get the same error.  Any
> > suggestions would be appreciated.
> > Thanks!
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> In my installation Tcl is in "C:\Python25\tcl", if that helps.

That is where my installation is located too.  Why is it insisting on
looking in "C:\Python25\lib\tcl8.4"?  Can I change where it is looking?