OK, this is a new problem. Fresh server with the new build, 8.0.2 GW backend. Only very small attachments will come down to the device. Anything over a hundred KB or so won't download. I can see that there is an attachment, but clicking to download starts the download, but it never seems to finish. Server is set to handle 500 KB attachments, so is the device. This worked in the May 5 release, I had very little trouble with attachments on that release.