I just have started to use your awesome component and is great. Thank you for your great work and for sharing this with the community.

I am using also JoomGallery and found that the system plugin is causing the gallery to not show images correctly. More about the problem you can find here. http://www.en.joomgallery.net/faq/general-faq/problem-with-certain-system-plugins.html

I am not very advanced in Joomla, so I am not sure if that would be a permanent solution, but it works for me.

In the file plugins/system/cck/cck.php in the function onAfterDispatch(), insert a conditional statement to check whether the format is html and close it at the end of the method. if($app->input->get('format') == 'html'): endif;

An article about it

I hope that would help someone with the same problem.