One thing I notice is that you are using Chrome. I don't know if that is causing the issue but Chrome and Flash have not been playing nice since Chrome's latest update. You could enable Flash in Chrome and try the download (https://helpx.adobe.com/flash-player/kb/enabling-flash-player-chrome.html) or use another browser. Hope this doesn't come too late; Adobe Presenter is a great tool. Let me know if this works!