Boy is my face red. You're right, I downloaded it from something called inkscape.downloadasaurus.com, which apparently makes a racket out of hijacking open source installers, as described above. I tried the installer from sourceforge, and all was well. Apologies for the false alarm and the rant -- I...

I just installed Inkscape on a new system, and I'm very sorry to see your new Optimum installer. When I install and use a tool, I don't want to be distracted by a minefield of come-ons for products I don't want. I tried to step around the bogus "invitations" to install other software, but ...