As of this morning, I get the above error when trying to publish from the sitebuilder. I updated my passwords yesterday and double checked that they are all now working.
Hello Brad,
The Premium Website Builder has 2 passwords, one to log in and one to publish. The publishing password MUST match your current cPanel password as it logs into the server to place your files.
Here is a link that explains how to change the publishing password. After that, you should have no issue with publishing.
Best Regards,
Scott M