[Mailman-Users] "TypeError: not all arguments" converted with check_perms

[Olson, Gary]

Hi,

I just did a new install of mailman v.2.0.13-1 on a redhat v.7.3 system.  When editing Mailman/mm_cfg.py and then running bin/check_perms, I get the following error: 
# bin/check_perms 
Traceback (innermost last):
File "bin/check_perms", line 46, in ? 
	from Mailman import mm_cfg 
File "/var/mailman/Mailman/mm_cfg.py", line 60, in ? 
	DEFAULT_URL = '<http://www.mydomain.net/mailman/'> % DEFAULT_HOST_NAME 
TypeError: not all arguments converted 
What is causing this error? 
I'm a newbie to Mailman and Redhat so any help will be appreciated and will need to be clear and basic so I can understand it.  
Thanks for any help you can provide!
Gary