Hello, I try to add a slideshow on a right-column on every page/subpage. Unfortunately it does not appear everywhere or sometimes even not at all. I tried these approaches:

Through the default page:
Dashboard->Pages and themses->defaults:
Here I have set the slideshow. I tried it from an existing slideshow from a public scrapbook and also just through adding a Block->slideshow.
Then I checked also all subpages/pages, where it should being applied to.
In this case the slideshow appears almost randomly or not at all on the pages.

Finally I tried to add it manually to every page: Here the slideshow shows up first but if I add more picture to the slideshow or if I change settings of the slideshow, only the very first page displays it. The other pages all contain the added block(a blank one), but I have to delete those and re-add it again for being displayed.

I thought it is a permissions problem, tried a lot of different settings. All pages have the same theme and the same page-type.

I think it should be solvable through the first approach(defaults). Any hints are appreciated... Thanks