[Zope] TypeError: 'in <string>' requires character as left operand

[Dieter Maurer]

Gordon Sullivan wrote at 2003-11-7 00:52 -0500:
 > I seem to have messed up my Plone real good.  I'm not sure, but I think what I
 > did to cause this was clicking the drop-down on the preferences screen for the
 > editor.  There was only one selection, 'None'.  
 > 
 > Now if I try to access /folder_contents for any folder, it gives me a Site error
 > and the message:
 >     
 >     "'in ' requires character as left operand".  

The traceback will help you enormously to analyse this problem...

-- 
Dieter