When I download and install the full plugin version, why does it still say trial?

When you download and run a Centigon Solutions Plugin component off of our customer portal for CSV Connector, Essentials Bundle or GMaps Plugin, it does NOT install the XLX inside of Xcelsius or SAP Dashboards. Post SP BI4.1 this will likely change.
Instead, as you click through the un-packager, It will place a brand new XLX that can be installed into your Xcelsius or SAP Dashboards add-on manager and will replace your trial XLX. By default, it is typically placed here:
C:\Program Files (x86)\SAP BusinessObjects\Xcelsius\Add-on
A full description of the install steps are here: