Thread:Extension talk:AWS/Could not create directory mwstore://localS3/public/reply (2)

I'm having the same kind of problem. My config is: In other words, it is exactly like the recommended one in the extension page, except for the key, secret, region and containers. But when I try to upload a file, I get:
 * Could not create directory "mwstore://AmazonS3/public/d/da".