hast du den JW image rotator hochgeladen und verlinkt?
Unpack the zip file and upload the content into the folder wp-content/plugins/nggallery (the WordPress plugins folder). Note : Do not change the folder names.
For the slideshow you need also the free (for personal use) JW Image Rotator from Jeroen Wijering. Download the player from the website and upload it (only imagerotator.swf) also into the NextGEN gallery folder. Now you can activate the plugin.
