Just a test..can you convert your JPG files into gif files, upload them and check if they work? I know there are/have been some problems with eZ publish and images(regarding differentformats).
My first attempt was using a gif file which was totally rejected by EZ, which is why I then used a jpeg file. The two files are unrelated ie I did not convert one format to another.
What I do not understand is why my problem is not more widely discussed!
Thank you for your reply which is the only reply since I first posted in February!
Possible causes of your problem. I am sorry you did not get a quick reply.
1. It sounds like Imagamagick "convert" cannot be found or is not correctly installed.
2. Could also be a problem with GD. 3. Permissions error with the var/storage folder
The setup wizard has checks for these and is a handy way of checking.
The first place to check is Imagemagic Check out the convert threads, this might help http://ez.no/ez_publish/documentation/configuration/troubleshooting/images_do_not_work/you_are_sure_that_you_have_imagemagick_but_its_not_working
I hope this helps
--tony
Tony Wood : twitter.com/tonywood
Vision with Technology
Experts in eZ Publish consulting & development