[Modules] can not get mod_auth_xradius to work

[mod at office.tcrholdings.com]

Hi I have a freebsd V6.1 with Apache 2.1 installed box that I am trying to 
get mod_auth_xradius to work on however all I am getting is an error whe I 
go use it I list the config below. any help please

this is the log error
[Tue Oct 17 22:38:34 2006] [error] Internal error: pcfg_openfile() called 
with NULL filename

this is the config
<Directory /usr/local/www/cgi-bin/radusers>
       AllowOverride All
       AuthName "RADIUS authentication for localhost"
       AuthType basic
       AuthXRadiusAddServer "localhost:1645" "xxxxxx123"
       AuthXRadiusAddServer "202.182.166.10:1645" "xxxxxxx3"
       AuthXRadiusTimeout 10
       AuthXRadiusRetries 5
       require valid-user
</Directory>




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