Clients not appearing in Reports

I need to run a report showing all of the software installed on our computers. 

I followed the instructions here to install Inventory Plug-in and Gather inventory. 

http://www.symantec.com/connect/forums/how-get-rep...

All goes as expected until I try to run the report. When I go to Reports > All Reports, then expand Reports > Discovery and Inventory > Inventory > Cross-platform > Software/Applications > Installed Software by Computer, I only see two computers listed, not the 100+ I am expecting. 

What am I doing wrong?