Norton is doing what Norton does... it will quarantine the downloaded executable file.
A big thanks to Sherry McGee Carrol, who suffered the same when she downloaded 1-Click Book Creation and she offered up this tip:
Sherry says, "I had the same problem with Norton. However, when Norton pops up with a message saying that it is "unsafe" so it has deleted it, there was a button to click for "more information".
When I clicked on that, it actually gave me the option to "restore" if I trusted it.
The first time I installed it, the "more information" button didn't show up, or I missed it or something.
So, I did the install again and watched for that button.
It hasn't actually deleted it; it has quarantined it and so it can be restored if you can find that option in Norton."
That tip from Sherry has helped a number of people get the app working .
Other options are to add 'an exception'.
There are a number of websites about which will advise you on what to do, here are 2 of them: http://community.norton.com/en/forums/how-add-folder-exceptions
Or this one: http://smallbusiness.chron.com/set-exclusions-norton-antivirus-61906.html
Sherry's tip seems better and much easier though!