This backup file cannot be used with the specified database

  Explanation:  When a by-area restore operation or an incremental
  restore  operation  is  performed  on  an existing database, the
  database must either be the original database  that  was  backed
  up,  or  it must be recreated from a full and complete backup of
  the original database.

  User  Action:   Perform  the  operation  again,  specifying  the
  correct database.