When I try to send a picture message, I receive a screen that says "invalid destination address."  Now when people send me picture messages, I must go to vzwpix.com to view them.  I have never had these problems before.  And I am sending/ receiving to/ from people in verizon network.  I have tried turning off the phone, removing the battery, and then dialing *228 and that whole thing.  That did not work.  I recently changed my plan to unlimited messaging, from 250 messages.  Does anyone have any suggestions?  Thanks in advance.