I have been using Google's reCaptcha for a while and I always add 127.0.0.1 to the domain list so it can be tested on my WAMP. Recently I wanted to add a new site (separate from the others) but the program will not allow me to add 127.0.0.1, saying "The following domains are invalid: 127.0.0.1. A valid domain requires a host and must not include any path, port, query or fragment.". Yet it allows me to add "localhost".
Has anybody else found this problem and how to get around it?