After you completed the integration in Integration Manager, then you need to install Microsoft Report Viewer Redistributable 2008 if you get below error message while clicking View Log button .
Could not load file or assembly ‘Microsoft.ReportViewer.WinForms, Version=220.127.116.11, Culture-neutral, PublicKey Token=b03f5f7f11d50a3a’ or one of its dependencies. The system cannot find the file specified.
Download Microsoft Report Viewer Redistributable 2008 from below link and install the same then try again.
Hope this helps!!!