Sorry to hear via this medium of a problem of vtiger, not of the component. The component does take over the functionality of the standard Vtiger Portal inside the joomla CMS 1.7 and 2.5!
This problem is a pdf problem inside the vtigerCRM itself, i checked it via your original Portal twice. The pdf generator in your VtigerCRM is not working as it should. My answer on 10/28/13 gave you a link to possible solution(s). Last time i looked the component worked like we developed it in the same way and with the same views as the original stand alone portal does.
Also put in much free time (with no charge) from 10/2/13 to 10/28/13.
Please contact me if there are any problems with the Component, contact Vtiger developers for other problems.