I've read somewhere you can't rename files on Amazon S3, which might explain my not being able to rename assets hosted on S3? Or, have P&T found a way around this and I've just not set the right user permissions?
My current permissions for this user are:
"Action": [
"s3:ListAllMyBuckets",
"s3:PutObject",
"s3:PutObjectAcl",
"s3:DeleteObject"
],
Thanks, Clive