Acidfree album gets deleted from the list box on deleting the content

When i create an image by creating an album through the 'acidfree' in the list box instead of 'root' and then delete it there is no problem.
But when i create an album through the 'root' from the list box and then delete an image which was created through it, the whole data in the list box gets emptied.
which means i am not able to create any other image even under the default 'acidfree albums' because not only that particular album is deleted but also the whole list box content is deleted.