Been looking at this and it seems the JSON for the IAM role isn't correct anymore. Maybe amazon changed their grammar policy since the original entry this is what I have got to:
{
"Statement": [
{
"Effect": "Allow",
"Action": "s3:*",
"Resource": "arn:aws:s3:::<something>/*"
},
{
"Effect": "Allow",
"Action": [
"s3:Get*",
"s3:List*"
],
"Resource": "arn:aws:s3:::<something>"
}
]
}