So I may be running into a more general permissions issue. I get "S3ResponseError: 301 Moved Permanently" even if my bucket and cluster are in the same region. If I try to load a demo dataset from s3n://neuro.datasets, I recieve a "403 Forbidden" error. My AWS keys are locally stored in my bash_profile. From what I gather these should be loaded with the thunder context on the EC2 cluster. If I set them manually using "tsc.setAWSCredentials" I get the same errors. Any idea what might be happening here?