The last two replacement banners I have uploaded for a client were not showing on my website. After checking all the zones were correct, etc. I decided to re-upload the banners, when I noticed that having pressed 'Save' on the new banner upload, the banner image did not appear at the top of the banner page in Revive and against the 'browse' button it said "No banner selected". I checked the banners for other existing clients, uploaded at various times over the past months and all are OK. Having checked, the new banners were not uploaded into the www/images directory (which has correct permission), so I do not know why, but Revive is no longer uploading banners, so I cannot update or launch new campaigns.
Any advice would be greatly appreciated.