The target is to show nodes with images on top and nodes without image after. It sounds like a straight forward requirement that Views could do it. Unfortunately, module filefield doesn't provide such filter to View.
Bug: The profile_role module will check the user's role before allowing them accessing to the profile fields. When the profile fields need to be shown on Registration Form, the module sets up an exception that checks if this form is user registration form then skip checking user's role.
Using command prompt check whether you are logged in as root user or not...
Views is an amazing module not only because of its UI for query generating but also as it provides comprehensive hooks. Sometimes these hooks confuse beginners with their sequence. Here is the processing sequence of these hooks for your convenience.
Drupal Filefield module bug (and other modules using AHAH form). “This form was missing from the server cache” error by cache_get() bug. There is annoying bug when using the Filefield module in Drupal. If you previously uploaded a file and have site cache enabled you probably will see the following error message “An unrecoverable error occurred. This form was missing from the server cache. Try reloading the page and submitting again”.