anchor.diff:  
   
         ! Read in constant for tower wake model = 0 full potential flow = 0.1 model of Bak et al.
  -   CALL ReadVar( UnIn, FilName, p%TwrProps%Tower_Wake_Constant, 'Tower_Wake_Constant', 'Constant for tower wake model', ErrStat )
  +   CALL ReadVar( UnIn, FilName, p%TwrProps%Tower_Wake_Constant, 'Tower_Wake_Constant', 'Constant for tower wake model', ErrStat, ErrMess )
      IF ( ErrStat /= ErrID_None ) RETURN
   
      ! bjj: should there be a sanity check here, too?
  
positive.code: 
  
        ! Read in number of tower CD entries, NTwrCD
     CALL ReadVar( UnIn, FilName, p%TwrProps%NTwrCD, 'NTwrCD', 'Number of tower CD columns', ErrStat )
     IF ( ErrStat /= ErrID_None ) RETURN
  
     IF (p%TwrProps%NTwrCD < 1) THEN
  
negative.code:       END IF
        CALL Conv2UC( Line )
        IF ( INDEX(Line, "DEFAULT" ) /= 1 ) THEN ! If it's not "default", read this variable; otherwise use the value already stored in P%DtAero
           READ( Line, *, IOSTAT=ErrStatLcl) P%DtAero
           IF ( ErrStatLcl /= 0 ) THEN
              CALL CheckIOS ( ErrStatLcl, InitInp%ADFileName, "DT", NumType, ErrStat, ErrMess )
              RETURN
           ELSE
              ErrStat = ErrID_None
  