[horde] Horde - Accessing calendar

[Harlan]

Hello,
   I'm trying to access my calendar from Thunderbird and Android.

   The closest I've come so far is through a webpage using the 
abbreviate principals link:  https://<ip>/webmail/rpc/  . This allows me 
to login using my username/password and I see a directory listing of 
"Collections" such as principals, calendars, etc.  If I try to click on 
any of those I get a "Not Found" error in the browser.

   When trying from android and Thunderbird, I get a message basically 
saying it can't find the server.  I'm able to login to the Horde main 
page just fine.

   What information should I post to help figure this out?  There are 
lots of options to look at and change and I don't want to post lots of 
settings that are not relevant.

   I've lots of searching and nothing so far has yield any solutions.

   BTW, I'm doing this from inside my network so I'm not concerned with 
outside access nor firewalls right now.  First get working inside, then 
worry about getting working outside.

Thanks,

Harlan...