G'day Bruce, I have done some experimenting, and it seems that at the server end, a cache of the original uploaded file is somehow kept in cache. I had another panorama I couldn't swap, so I ended up deleting the original panorama, uploaded and published a new one using a file with the same local filename, gave it the same panorama name and description - and it still kept the panorama previously posted even though I had deleted to original from the website! Bizarre to say the least! I've uploaded and published a different panorama and tried the usual swap routine, and the same behaviour persists. This time I inverted the hues in the panorama so it would be obviously different. Again, the swapped panorama with inverted hues displays in edit mode, and even on the thumbnail on my panorama index page (see attached image) - but the original panorama with correct colours still displays when you go to view the file!