Before v 3.16.0, the aspect ratio of the folder images was as expected for me, see my site here: http://www.yetanotherhomepage.com/photo/noirblanc/index.html.
The settings for this were as "img1.jpg" see attached. FYI the images and pages on my site have not been changed after 3.16.0 and are under 3.15.1.
Since 3.16.0 if I apply any change, the result is as on "img2.jpg"???
If I change the settings for folder as on "img3.jpg" then the generation of the folder images is OK. But even if I save the project, it always comes back as on "img1.jpg" and in consequences any modification change again the folder images size???
I see. This is an old jAlbum bug that can't restore a combo box that has a Float value. (In the background the box contains values like 0.5, 0.75, 1, 1.25 etc.) However, I haven't yet noticed it affects this box too. Thanks for reporting, we will try to find some solution.
Instead of fighting with it, I'd just store the JComboBox entries as String. Do a split(":") on it, Float.parseFloat() the two resulting values, and divide. No need for any fancy error checking, since the user can't enter his own values in the combo box.