norton 360 objects to openoffice

I'm on a new computer, and I would like to continue using Openoffice.  Norton 360 interrupts the download from the openoffice site, claiming there is a virus. On the first attempt (saying "save"), something went far enough that Norton advised me to "Restart my computer" in order to finish its fix. Now I am making sure to use the official site. On my last attempt (saying "Run"), I do see a choice to "continue" instead of canceling the download. What confuses me, in part, is that I do see this problem mentioned in the distant past when I search, and I also see that Norton approved the present version a few months ago.