[horde] New Install - Cannot autoload Horde Core libraries

[L. D. James]

I performed a fresh install (numbers of times) using the link 
http://www.horde.org/apps/horde/docs/INSTALL under the section, 3.1 
Installing with PEAR.

Each time I try to access the site I get this error message:

Cannot autoload Horde Core libraries. Please reinstall Horde and/or 
correctly configure the install paths. If you are using an autoloader 
cache, try to clear it.

I performed a number of fresh installs using the following options:

pear install -a -B horde/horde

pear install horde/horde

pear install -a horde/horde

I can't find in the docs where I'm to go to set the install paths.

Thanks in advance for anyone who has insight on how to resolve this error.

The server is Ubuntu 14.04.

-- L. James

-- 
L. D. James
ljames at apollo3.com
www.apollo3.com/~ljames