My DDO download manager just don't Start, It's missing the Pando Data Folder, Installed In the first Run of the Manager... My brother surely deleted this Folder Becouse he never saw it in the Program Files Folder and Thought it was a virus... >,>

I downloaded the Pando Installer from the official Website, but when I execute the Pando Installer, Just appears the message ''Last Version Of Pando Already Installed'', and my problem persists... =/

What Should I do? Help plz =(

@EDIT

Sorry for my bad english ~cry~