I'm just getting an 'Access Denied. Please make sure the user attached to the access key has access to [bucket]' error when running local.html from local or the bucket.
This means the IAM user you created does not have the correct permissions to access the buckets you listed on the login page. This could be because of a typo somewhere in the policies, or maybe you entered the names of the buckets incorrectly on the form?
Thanks for the reply - I use static sites on S3 a lot, so pretty confident of the setup. I've also replaced the installation ones with my usual policies (slightly different) and getting the same error. Anything else I can try?