Reply To: How do I get the X in empty graphic frames?

The “x” is representation of the type of frame that you have in your document. There are 3 different types of frames in InDesign, all of which are defined by their content (or intended content). The three frame types are Text, Graphic and Unassigned.

The issue that you’re having has to do with the content setting on the frames in your document, they are probably currently set to either “Text” or “Unassigned”. To get the “x” back on these frames, you’ll need to adjust the content setting for them.

Select the frame(s) that you would like to adjust, go to Object>Content>Graphic and… presto! Your “x” placeholder is back!