Illegal exit from DEF* (ERR=245)

  A multi-line DEF* contains a branch to an END, SUBEND  or  FUNCTIONEND
  statement.   Change the program logic so that the program executes the
  multi-line DEF's FNEND statement before executing the END,  SUBEND  or
  FUNCTIONEND  statement.   This  error  cannot  be trapped with a BASIC
  error handler.