Can't start indexing in smart analytics

Hi Experts,

I face an issue as i installed smart analytics as per guide but when i try to start indexing my data the system just say that "The "Interaction_Library" library is now being indexed and you cannot start indexing again." but the library isn't indexing the indexing status still not started and that's why i can't find any thing in context search. 

The issue is severe, help will be appreciated and kudos surely will be given.