I am using DotNetNuke 7.2. The site crawler doesn't index anything. it runs every 1 minute and in schedule history, it shows:
Search: Site Crawler Starting. Content change start time 4/30/2014 4:36 PM
Tabs Indexed: 0
Modules (Metadata) Indexed: 0
Modules (Content) Indexed: 0
Users Indexed: 0
Total Items Indexed: 0
All Database tables related to search functionality are empty. Can anybody figure out the problem.