I am trying to figure out, what the cause of the following problem could be: the preview images are not correclty depicted, as i start the juicebox application i included on my web page. See here:
Click for example on the project 'schlossberg 11, quedlinburg'.
Some of the images have a balck edge. I believe the standard setting is to fill the previe image with the referred imaged, taking the correct aspect ration into account.
What could be the reason?