Error running Six Sigma Project Management

Dear support Team,

I have an user project and I have instaled the Six Sigma Project Management at the same Application Tree. After the instalation of Six Sigma, when I am trying to run a new Six Sigma Project Management case, the application shows the flollowing error message:

{"status":"error","code":"CASE_CREATION_ERROR","type":"CaseCreationException","message":"CEntityDA - Nothing to insert."}

Please, see the picture attached.

Thanks a lot,

Pedro Gentil