Ok, I feel extremely stupid but I can't get it to work with an image I'm trying to edit: I get a black background each time I try, and the Microsoft gif editor tells me the image is corrupted.
Source: http://img.dareka.fr...red_resized.gif
Result: http://img.dareka.fr...sized%20pdn.gif
(I just opened the file and saved it back)
The color palete also looks very wrong. Any idea?
Edit: reading back my post, I should have clarified: I think the issue is with saving, the image opens correctly with Paint.Net, but is broken after saving it as a .agif.