With deactivating jQuery Colorbox and using a lightbox effect it’s working as expected. Having jQuery Colorbox active plus a lightbox effect I end up with 2 effects for the fist page.
The reason I want to have jQuery Colorbox on is, that there might be posts with images, which don’t use the gallery.
Howvere, I deactivated jQuery colorbox at the moment to make the gallery work.
-Clemens
