When I'm trying to edit a product(the product already has an image) and add another image, the image is uploaded correctly in the /media/catalog/.. directory. The image is displayed correctly in the Admin-area, the mousehover and everything is working fine.
After save the product, the image is disappeared in the Admin-area and that is not displaying on front end either.
There are no errors in the php or Magento log.
Thank you for your help.