How would i get my display image back on my messenger? it's not showing up anymore and having troubles.?

hello my name is Kristina, .... i'm having problems with my display image on messenger my own picture. i know how to do it..but it just seems that my picture isn't showing up anymore...except for my avatar <-- that's the only picture that will show up....but not my display picture on my yahoo messenger.... How do i get my display image back on the messenger. e-mail me at krissy_260@yahoo.com thanks!