Thanks for the post, this info helps. Quite a few scanners out there (avast, norton) will complain about the TopoFusion installer, especially in the first month or so after we release a new version. The reason is it's a 'rare' or 'new' file that they haven't seen yet.
So, yes, please scan it and force install, or report as whitelist, whenever possible. That does help us (and other TF users) out.
Downloads of the software are direct from our site, and only compiled on one development computer that I always maintain anti-virus on. There is almost no chance that any of our installers would be malicious in any way.
I generally fill out the whitelist request form with Norton which each new version, but it is tedious and sometimes I forget.
Again, thanks for the post!