SQL Developer Data Modeler

I created a Relational model with some tables and FK between them.

When I generate the DDL for the previous model, I receive some wrong results:

1) DDL for the schema is nor created even that Tools > Preferences > Data Modeler > DDL > "include schema in DDL" is checked

    My model contain one schema named food

2) The DDL contain lines like

     --  ERROR: Invalid View V_Difficulty

     ALTER VIEW Food.V_Difficulty ADD CONSTRAINT Difficulty_PKv1 PRIMARY KEY ( DifficultyId ) DISABLE ;

  when there is not a previous "create view" statement for: Food.V_Difficulty in the DDL script generated by the SQL Data Modeler.

  I try to remove all theses view from the relational model and save the design but when opening again the design, these views appears again.

  There is one view named v_tablename for every table in the relational model. I don't created directly these views. Maybe I selected some option on some wizard that create them but I don't remember.

3) For the main/master table of my relational model, the DDL contain a trigger with some added columns that also I don't created directly

    Also, the trigger is created in "emp2" when I don't have any table named emp2 on my model !

CREATE OR REPLACE TRIGGER Food.Recipe_JNtrg

  AFTER

  INSERT OR

  UPDATE OR

  DELETE ON emp2 for each row

Declare

  rec Food.Recipe_JN%ROWTYPE;

  blank Food.Recipe_JN%ROWTYPE;

  BEGIN

    rec := blank;

    IF INSERTING OR UPDATING THEN

      rec.RecipeId := :NEW.RecipeId;

     ...

      rec.JN_DATETIME := SYSDATE;

      rec.JN_ORACLE_USER := SYS_CONTEXT ('USERENV', 'SESSION_USER');

      rec.JN_APPLN := SYS_CONTEXT ('USERENV', 'MODULE');

      rec.JN_SESSION := SYS_CONTEXT ('USERENV', 'SESSIONID');

      IF INSERTING THEN

        rec.JN_OPERATION := 'INS';

      ELSIF UPDATING THEN

        rec.JN_OPERATION := 'UPD';

      END IF;

    ELSIF DELETING THEN

      rec.RecipeId := :OLD.RecipeId;

     ...

      rec.JN_DATETIME := SYSDATE;

      rec.JN_ORACLE_USER := SYS_CONTEXT ('USERENV', 'SESSION_USER');

      rec.JN_APPLN := SYS_CONTEXT ('USERENV', 'MODULE');

      rec.JN_SESSION := SYS_CONTEXT ('USERENV', 'SESSIONID');

      rec.JN_OPERATION := 'DEL';

    END IF;

    INSERT into Food.Recipe_JN VALUES rec;

  END;

  /

I write this question after I tried, without success, other operations like create a new model and copy table-table from the old model to the new model.

SQL Developer Data Modeler Version 4.1.1.888

OS Win7 64bits

It's the version 4.1 a stable version?

Isaac