I seem to be able to upload by clicking the paper clip icon above the new posting box, when the attachment screen opens and then the contents seem to disappear, scroll down until the browse files come up, browse, attach and upload, then go back to the paperclip icon, left click on it and you’ll see your file listed, double click on that and it will add it to the post as the thumbnail - at least that’s the process as I remember it…..yesterday was a long time ago
