Open the Symantec Management Console and click on Manage and select the Softwares page, the view does not load as per the product design.
However the following pages open properly.
Manage > Computers
Manage > Jobs / Tasks
Manage > Policies
Manage > Software Catalog
Symantec Management Platform 8.0 HF3
Review the Menu configuration and make sure the settings match with the following picture, especially: Show single page view and the URL: /Altiris/ActivityCenter/Default.aspx?viewGuid=0b9ae490-217c-48df-8f7f-2cda1cdd2a00
If the problem remains, perform the following steps.