I am not able to generate report using TestNG+Intellij 12, also provided out path in Run configuration. I have even updated to TestNG 6.8 by this way : https://stackoverflow.com/a/13452828/1434611
Can anyone provide some input if you are able to generate reports.
At the top select the dropdown and click on edit configuration
Check on Use default reporters which is under listner tab option which will create test-output folder in your root folder with all reports.