If you are attempting to insert clip art named Dglxasset.aspx from the Clip Art task pane into your publication, but you ...

If you
are attempting to insert clip art named Dglxasset.aspx from the Clip
Art task pane into your publication, but you cannot insert the image and
the image thumbnail will not display, there may be a conflict with a file in
your temporary Internet file folder. Delete the temporary Internet files on
your computer to make room for the downloaded clips.