OK, so support for the Blogger beta is not very widespread. Signing up for the “old” version would have been better. Most of the web-based and browser-based tools I have encountered don’t support the Blogger beta, and give an error message when I try to log in. Google: Update your Blogger Web Comments extension for Firefox! Other developers: Update your apps/websites to support the new Blogger beta! It will become the norm eventually, and you don’t want to be left behind in the dust.
Beta Support Spotty
This post was published 13 years 2 months 2 days ago. A number of changes have been made to the site since then, so please contact me if anything is broken or seems wrong.