I was all set to say this was entirely a BitComet problem. i zm still not sure whether or not it is.
Using only BitComet I can paste this URL into the "Open URL" dialog and get success but making it HTTPS spawns an error.
http://torcache.net/torrent/C35656461B7F4041440C9D1F18D562F798249E9B.torrent?title=[kat.ph]american.idol.s12e13.hdtv.x264.2hd.eztv
However, when I use the https version and paste it into the "Open" dialog (which seems meant to open local filesystem torrent files, it seem to work by first downloading it (or having IE download it, since the downloaded .torrent file ends up in the .Internet Explorer cache) and then executing it to create the torrent download task.
I am not sure what all this is telling me (except to avoid using HTTPS when using torrent sites and Chrome).