Problem solved: "automatic" generation of thumbnails

I hope this will help someone else with the same problem (tested on versions 1.9.12 and 1.9.13):

when uploading new images to galleries, the thumbnails were not created automatically.

I found out that the problem was in the admin/functions.php page where the jQuery(document).ready() method didn’t have time to fire, because the page was redirecting to itself too fast.

To solve this I edited the action value of the forms from the admin/addgallery.php page, removing <?php echo $this->filepath; ?> and leaving only #actionname (for example action=”#uploadimage”, action=”#zipupload”, action=”#importfolder”).

http://ww.wp.xz.cn/extend/plugins/nextgen-gallery/