can't start IDLE 2.6 in Windows Vista

Mensanator mensanator at
Mon Jul 7 04:47:21 CEST 2008

Python 2.6b1 installed ok on my XP laptop but not my Vista desktop.

First I got a strange application log error:

Activation context generation failed for
Error in manifest or policy file
on line 12. The value
of attribute "name" in element
"urn:schemas-microsoft-com:asm.v1^file" is invalid.

Oddly, It IS valid. Poking around, I changed the name in the
manifest from "..\msvcr90.dll" to "msvcr90.dll" and copied
the .dll from the parent directory.

This stopped the app;ication error log messages.

In Googling around, I found the suggestion to do

python lib\idlelib\ -n

which gives me this error:

Traceback (most recent call last):
  File "lib\idlelib\", line 21, in <module>
  File "C:\Python26\lib\idlelib\", line 1382, in main
root = Tk(className="Idle")
  File "C:\Python26\lib\lib-tk\", line 1647, in __init__ = _tkinter.create(screenName, baseName, className,
interactive, wantobjects, useTk, sync, use)
_tkinter.TclError: Can't find a usable init.tcl in the following
    C:/Python26/lib/tcl8.5 C:/lib/tcl8.5 C:/lib/tcl8.5 C:/library C:/
library C:/tcl8.5.2/library C:/tcl8.5.2/library

And, just like the previous error, the file DOES exist

 Directory of C:\Python26\tcl\tcl8.5

06/12/2008  06:07 PM            24,808 init.tcl

But I note that the suggested places it looked have a forward slash
of a the backward slash used by Windows. Is this why the file can't be
I would try changing it but can't figure out where to look.

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