WEBDAV error - "date and time string"

[cyclecarl-hsx]

I'm trying to use the Adobe GoLive 7.0 WEBDAV client with a Tomcat 
5.0.27.  When I attempt to connect, GoLive reports
 
Date and time operations cannot be performed on this resource.
 
and provides the status
 
Server Error: The date and time string (last modified) sent by the 
server for resource "/" is not in ISO8601- or RFC0822-format
 
The archive for tomcat-user has a message from 2002 with the same 
complaint, but no response.  Anyone know what the I have to do to get Tomcat 
and GoLive to be nice?