C2019   CALL of CA-Clipper procedure or function

     Explanation:  You invoked a previously declared procedure or
     function with the CALL command.  CALL is designed to invoke separately
     compiled or assembled routines and not CA-Clipper-compiled procedures
     and functions.

     Action:  Some suggestions to resolve the problem are:

     1. Rename either the external routine name, or the conflicting procedure
        or function name.

     2. If you are compiling multiple program (.prg) files into a single
        object (.OBJ) file, check to see if the conflicting procedure or
        function is in another program file (.prg).  If it is and not called
        by procedures and functions outside of the program (.prg) file,
        consider declaring it a STATIC FUNCTION or PROCEDURE.