Can connect to S3 with no problem. Recognizes files when I click "Get Your Amazon Files". However, cannot download files from "Preview" column (next to file name in Product Downloads area) or after successful purchase. Receive error message: "Sorry something has gone wrong with your download!" Also, cannot "delete" file from Product Downloads area.
In S3, I have tried removing all spaces from file name, setting it as "public", giving permissions to "everyone" to open/download. None of this fixed it.