Setting up a blog, published to a Google Custom Domain, is a two step process.
- You setup DNS pointing to the Custom Domain server "ghs.google.com".
- You publish your blog to the custom domain.
But many others can't. And we all get one error, consistently.
Another blog is already hosted at this address.
What does this error mean? I suspect that Blogger is validating the DNS pointer, before setting up the relationship between the Blog*Spot blog (which is what we currently have) and the Custom Domain. And, if the DNS doesn't point to "ghs.google.com", then the custom domain must be in use somewhere else.
An alternate possibility is that there is a pointer somewhere in the Blog*Spot blog that points somewhere already. Or maybe the Blog*Spot blog can't be found.
Either way, Blogger needs to fix this problem. At least, add a few "bx-" codes, to let us know what the hell is going on, and so we can enumerate the problem in the forums.