I’ve set up reporting services and they didn’t worked.
Following errors appeared when I tried to deploy something or even simply open reports:
An error occurred while executing OnInit: The report execution failed to start. Verify that Report Extensions have been installed or are configured correctly. Please consult your administrator or the documentation. (rsErrorInOnInit)
What helped me was modification of reporting configuration files.
More details here: https://technet.microsoft.com/EN-US/library/hh389762.aspx