Cannot get Phpshield to be recognized

Ubuntu 14.04.4 LTS
PHP 5.5.9-1ubuntu4.16 (cli)
Plesk 12.5.30 Update #47

I am trying to install PHPmotion and it requires PHPshield. I followed the steps here:

http://wiki.phpmotion.com/PHPShield53

I uploaded the file to:

/usr/lib/php5/20121212

and I added

extension=ixed.5.3.lin

to:

/etc/php5/fpm/php.ini

I then restart apache. I've tried several other things but I am still having no luck getting it installed.

Is there a trick to this?