So I have a data model that I have built in Power Pivot that contains numerous pivot tables. All of the pivot tables are filtered using slicers, and for some reason, there are a few pivot tables where the slicers are not working. I have all the relationships built in the model, and nothing has changed. I don't understand why it isn't working. There are no error messages of any kind, the worksheet is not protected, and refreshing the pivot table would not overwrite any data in the worksheet. I have tried deleting the pivot table and creating a new one, but when I do that, it won't even let me choose a slicer. The dialog box comes up, and I can select a field to use for my slicer, but when I click on it, nothing happens. Is this a common problem?