I have Wysiwig, TinyMCE and Gallery Formatter installed and configured. When I insert an image into the page, everything looks perfectly on my computer. In admin mode, all the images are visible, and they even still stay visible when I log out but don´t clean the cache. if I copy the link to the image, which looks like http://my_site_name.com/sites/default/files/name_of_the_gallery/image.jpg, it also appears perfectly. But if I log out or enter without logging in from other PC, the image dissapears, showing only alt text. entering the link, the Drupal system gives "page not found" message.
As far as I understand, it deals with access rights of non-logged-in visitor. I tried to play with admin/people/permissions, but no way: even if I let visitors edit images, they don´t see them. What´s going on? Are there other places/ways to establish the access to the images (and other downloaded files, I do afraid that they will all have the same problem...) to the visitor?