I just updated my levels of Apache and PHP and have ImageMagick in place.
I can upload images and the thumbs get created but both the medium and full size are not showing - I'm getting a 'red x' where they should be. The thumbs in the filmstrip show just fine!
All existing medium/full size images are also showing with a 'red x' and again, their thumbs are intact and display just fine.
No paths have changed to my knowledge - any ideas where I need to look next? ImageMagick was and is, in /usr/bin/ which is what I have for $mogrify_command in 'config-inc.php'.