from the screenshot, looks lke you need MTC_88* in the BlobNamePattern field, not the prefix.  The prefix is essentially a key (folder), and the BlobNames are the objects.

currently you are looking in s3://MTCbucket/MTC_88/

good turn out here, congrats all.

Thank you for getting this out there, has been super frustrating understanding some of these errors while using these drivers with the promise of DB-API.  At least the distribution has gone public with maven, pypi, etc as a step in the right direction and hopefully will help things, especially with the drivers being the "front door" to alot of the cloud offerings.

The alchemy workaround for compatibility is especially great.