problems using Tkinter

[Gordon Vinther]

I get the following error whenever I attempt to use Tk

Os AIX4.2.1
Python 1.5.2
Tk/TCL 8.0.1

from Tkinter import  *  .............this works
root=Tk() ........... this errors with the following message

File "/usr/local/lib/python1.5/lib-tk/Tkinter.py", line 886, in __init__
self.tk = _tkinter.create(screenName, baseName, className)

TclError: invalid command name "tcl_findLibrary"