SquirrelMail Login Issue PEAR

SquirrelMail installs ok via the install script, but when logging in I get this error:

Could not include PEAR database functions required for the database backend.
Is PEAR installed, and is the include path set correctly to find DB.php?
Please contact your system administrator and report this error.

Here's the output of pear list:
PHP Warning: Module 'mcrypt' already loaded in Unknown on line 0
Installed packages, channel pear.php.net:
=========================================
Package Version State
Archive_Tar 1.3.1 stable
Console_Getopt 1.2 stable
Log 1.11.3 stable
PEAR 1.4.9 stable
XML_RPC 1.5.0 stable

I'm running PHP 5.2.6 from the Virtualmin bleeding edge repo. CentOS 5.2 32bit.

Status: 
Closed (fixed)