Hi everyone!
I had the same problem with uploaded images via ftp. Some galleries could not be displayed by Imagerotator.swf but in normal browsing everything was fine.
I figured out that some images in “Manage Gallery” displayed no name beside the thumbnail and these did not show up or broke the slideshow widget. These images had embeded jpg metadata and I think this broke the output of the gallery-plugin to imagerotator. Maybe there is an unescaped, not cleaned string or something in the processing of metadata by NextGEN, because these images were named “<KENOX S1050 / Samsung S1050>” in the alt & title field. Imagerotator eventually can not process these names and “crashed”.
I solved the problem by removing the images from the gallery, removing the embeded metadata from the images, uploading them again and refreshing the folder via “Manage Gallery”. After this everything was fine.
