Hmmm...my previous posts will attest to the fact that I'm no expert, but that may be a saving grace here...I've made most of the mistakes before other people will
![Smile Smile](https://www.geeklog.net/forum/image_set/pixel.gif)
Here are the things that stand out, to me, from your post (as things you might want to look at):
1) I don't think the main config.php settings impact the thumbnailer selection with geekary. It's all about the settings in the table prefix_geekary (gl_geekary by default), which gets set up during install.
2) I have had the most luck with ImageMagick. After you installed ImageMagick, did you re-configure/re-install geekary?
3) When entering the "path to mogrify", it's not the full path. (e.g., use '/usr/local/bin/' instead of '/usr/local/bin/mogrify/')
If you've got mad SQL skills or a tool like phpmyadmin, check out the table described above and see if that fixes stuff.
Hope I've helped more than I've confused,
-David