I'm trying to display the bend line notes, but the option to "display" the notes with in the Drawing View Properties is 'greyed' out.  The checkbox is selected under Tools-Options-Document Properties-Sheet Metal, so I don't see why this isn't working in this drawing.

The part isn't my design, so I don't know if there was something wrong in how the part was created.  I haven't had this issue with my parts in the past.