@ DrLeonP: At the bottom of the isolator web page is this:

Contact & Donations

Bug reports, suggestions, etc to bdeb at willmore dot eu.

This is in large type. Perhaps you were expecting an email address that was formatted more to your liking rather than the "anti-email collecting spiders" defensive formatting that the developer used?

I haven't yet tried this but I certainly intend to tonight. It sounds like a great little utility.