[Mailman-Users] error when changing subscription permisions

[Con Wieland]

When trying to change subscription permissions from "Confirm" to  
either "Require Approval" or "Confirm and Approve" I get the  
following error:

Traceback (most recent call last):
   File "/usr/local/mailman/scripts/driver", line 87, in run_main
     main()
   File "/usr/local/mailman/Mailman/Cgi/admin.py", line 175, in main
     change_options(mlist, category, subcat, cgidata, doc)
   File "/usr/local/mailman/Mailman/Cgi/admin.py", line 1299, in  
change_options
     gui.handleForm(mlist, category, subcat, cgidata, doc)
   File "/usr/local/mailman/Mailman/Gui/Privacy.py", line 510, in  
handleForm
     GUIBase.handleForm(self, mlist, category, subcat, cgidata, doc)
   File "/usr/local/mailman/Mailman/Gui/GUIBase.py", line 154, in  
handleForm
     doc.addError(
   File "/usr/local/mailman/Mailman/htmlformat.py", line 340, in  
addError
     self.AddItem(Header(3, Bold(FontAttr(
TypeError: not enough arguments for format string

other lists seem to work fine. Any ideas?

Thanks in advance
Con Wieland
Network and Academic Computing Services
University of California at Irvine