Maybe I missed a feature in VPHOT. I uploaded a file of images taken last night. Then I uploaded a file of images that had been taken last week. Some (many) of the images were of the same object (taken a week apart) and had the same file name. As there was a huge backlog in the queue, the second file arrived before any of the first had been processed. The images from the second file with the same name as in the first file overwrote the existing files . 
When the images appear in the queue thay all have the same timestamp, evidently when the zipped file is opened (incidentally, can we get the queue sorted by that timestamp instead of alphabetically by file name?). When the images show up in the Image list they are sorted by the exposure time - couldn't that be used to distinguish identical files in the queue, rather than the file name?
J. Roe [ROE]