Upgrading from 1.3.1 to 1.4

Using Joomla 1.5.22
CB 1.3.1
GroupJive 1.8

Time to upgrade to CB 1.4

Installed com_comprofiler.zip .
First part went OK then wait for second part of installation and got


Fatal error: Cannot redeclare _pear_call_destructors()
(previously declared in /home/baup/public_html/libraries/pear/PEAR.php:773)
in /home/baup/public_html/administrator/components/com_comprofiler/library/pear/pear.php on line 811


Tried to reinstall 1.3.1 again but got the same error.
Tried uninstalling CB then reinstalling but same problem.
I've had to use a backup of the site.

Help!

Found it !

Disable yvBBcode plugin before upgrade & enable afterwards !

Now on 1.4