Try re-uploading the wp-admin and wp-includes folders from a fresh download of WordPress
Did that but still have the same problem.
Have you tried:
– deactivating all plugins to see if this resolves the problem? If this works, re-activate the plugins one by one until you find the problematic plugin(s).
– switching to the 2010 theme to rule out any theme-specific problems?
– resetting the plugins folder by FTP or phpMyAdmin? Sometimes, an apparently inactive plugin can still cause problems.
– increasing the available memory?
http://wordpress.org/extend/plugins/memory-bump/
http://wordpress.org/support/topic/253495#post-1017842
– reviewing http://wordpress.org/support/topic/411649
It is a complete fresh install on a fresh database. It has no plugins and is running the default theme. Everything works and functions as normal except for the four images for the media uploads are just represented as question marks. I will try the memory change but I doubt it will do anything.
I increased the RAM and still the same problem. I have been looking for the code hooks for it and I cannot find them. I installed a copy locally and it works fine. A comparison of some files shows no difference.
???
One final long shout: try adding define('CONCATENATE_SCRIPTS', false ); to the bottom of your wp-config.php file (just before the require_once line).
