HI Dave , Thank you very much . I tried re setting the light distribution, But it didn't work.
But as you mentioned in the last reply I got an answer from the people at Design express and they confirm that ther eis a bug and that many people have experienced the problem so they are addressing it (as you mentioned ) in the SP2 . So they recommend that until then I keep using an older version. really appreciate your input.
thank you very much