Update on the issue:
I change $imgfile from a post_meta to a hard written url.
as exemple:
http://media-dev.glidentity.com/2015/04/favicon-192x192.png NO WORKING
http://media-dev.glidentity.com/2015/04/favicon-192x19.png WORKING
http://media-dev.glidentity.com/2015/04/favicon-192x192.pn WORKING
http://images.dailytech.com/nimage/Google_Icon_Redesign_20 WORKING
http://images.dailytech.com/nimage/Google_Icon_Redesign_2008_Denis_Kortunov_Screenshot_Wide.png NOT WORKING
A variable length limitation?
