I just tried this, but then I was prompted to re-authorize Ableton Live, and reauthorize my other plugins, and it's frankly too much to do for a non-permanent solution. Won't I have to do the same thing every time I log in as a Guest?
I also tried the instructions sent to me today by Line 6 and they didn't work, either. Quite frustrating for a $400 piece of software (or any software at all, really)!