After we have moved CS installation to another server, some of the thumbnails under mailings are just frames with a cross in it.
As there are only some of the images, I've ruled out security issues on folder levels.
But I suspect that we are missing some files or that there is some differences between the database content and the file content.
But how can I find the correct file from the image in CS?
I can use inspect the element and it showes something like for instance document:27
Can I find the images (thumbnails and other) following the shipment in s_shipment table?