S3 Cloud Storage error

Trying to get a Cloud storage Device setup on BU 15 (version 14.2 rev 1180).

Everything works and but at the step when entering server name and logon account I get the message "There are no storage locations found on the server.". If I change the user info or amazon:amazon.com I get a different message so sure the settings are correct.

Bucket can be found using S3 browser, and bucket name is all in lower case (no spaces or special characters).

Any pointers as to how I can get this to work ?