When looking at the debug file, I can see the request, which I copied into a browser and fires a beacon. The issue that I have is that I'm not seeing the data in the Adobe Analytics UI. If you have a way to either troubleshoot this or if you require more information, let me know.
Which report are using? I checked the download links report by going to Site Content > Links > File Downloads and I see data for the value "Contribution Form - The Rotary Foundation". I also checked site metrics > custom events > custom events 1-10 > Download a Document and I see instances in that report as well. I don't see any issues with the tag provided.