I saw a ticket on this that was closed but the solution posted is not accurate for my issue. I have gone through the set up on Cyberducks Wiki and also made sure permissions were correct (even setting full access when the preferred setting for buckets is write only). I have gone through the help pages here and on Amazon and I can not get this to allow users to upload files to buckets created. Please help me with what I am missing.
Note users can upload to buckets using the S3 browser on Windows, this issue with permissions only comes up when attempting to upload via Cyberduck.
Difficult to provide assistance here but the error clearly indicates that the user you are logged in with does not have the required permission to read & write files in the bucket. Check in the ACL tab of the Info window (⌘-I).
I have checked my ACL, the user with full control can not upload. I should note I am able to download fine and as I mentioned before I can upload on Windows, so obviously the user has the permissions I assigned for that bucket. I guess I will just have to find another option.