How do import a paper private key into MultiBit?
Tools -> Import Private Keys

Create a file with the private key inside it. If you do not add the time of creation of this address, you get this message:


  "There were missing dates. Have to go back to genesis block."


I think this date should be the first transaction date registered in the block chain.


  Key createdAt is in UTC format as specified by ISO 8601
  e.g: 2011-12-31T16:42:00Z . The century, 'T' and 'Z' are mandatory


To be safe, turn the date back a few days.