Insight keeps deleting an executable file that I trust

Hi --- I'm running Chrome browser in Windows Vista, with Norton 360 Premier Edition Version 5.2.2.3.

I download a small .exe file (developed by a Yahoo Groups member for home schooling reports that have to be filed qtrly in NY state. I trust the source, but Insight deletes the file EVERY time and I'm more than  a little annoyed.

 

Any help out there? Seems like it's a pretty common type of problem ... ?  Thanks.