The following error appears while publishing a website with Sitebuilder 4.5:
Error: The site cannot be published to the specified location. Cannot publish to the specified host via FTP. Authorization failed.
Connectivity check to the FTP location with steps described in KCS #37628 is unsuccessful.
Invalid FTP credentials were set in website publishing settings. FTP login settings are stored in Sitebuilder database.
Set correct FTP login credentials in the site's publishing settings:
Parallels Plesk Sitebuilder > Sites > SITE_ALIAS > Publishing Settings