If there are no awards other than Overall and you try to use the Overall (Responsive HTML) it silently fails. All the other report types work, and unticking Show Awards fixing the issue.
I suspect that this is related to bug #55 as when the report is run, it enumerates the awards. If the "add award" button is busted then something is a miss with the award list and then the report would not run.
If there are no awards other than Overall and you try to use the Overall (Responsive HTML) it silently fails. All the other report types work, and unticking Show Awards fixing the issue.