I know a lot of people had a blank page problem when downloading results to CSV, but my problem is a bit different.
If I create a questionnaire using a few radio buttons, and can download the results with no problem.
If I make one that uses almost exclusively check boxes (apart from Q1., which is a text box), when I click the download button, I'm returned to the "View all responses" screen. It's as if the site thinks it's given me the file for download! I've turned debugging on, but still don't get any messages of any kind to suggest that there's been a problem.
I'm using a 1.9.5+ build, and the newest version of the questionnaire module. Any suggestions?