turn off popup about fonts

Using Adobe reader and checking a lot of documents. I do not need to see the message shown below about misssing fonts ever again.
How do I turn it off?  In Preferences I have selecte Do not show edit warnings and Don't show messages while viewing a document, but these do not help. So. please help. 

Cannot find or create the font 'PalatinoLinotype,BoldItalic'. Some characters may not display or print correctly.