Cause: This error occurs if the site for which you want to generate stats has no IIS log file. IIS log file is generated when the site is visited through web. WebAlizer requires IIS log file for stats report generation.

Solution: If you are creating stats for a domain http://www.MyDomain.com, you should first visit the domain through web browser, this will generate IIS log file and then you may create the stats with out any problem.