Sometimes this occurs because you have pop ups disabled in your browser. To fix this issue try using a different browser or enable popup in your existing browser.
Note: if you're using Apple' s Safari browser you will not be able to download flyers because Safari blocks all downloads as a way to try and avoid Malware. You can read more about this in Apple's forums here: https://discussions.apple.com/thread/5245748
In this case we suggest that you use a different browser to download your Flyers such as Firefox.