EViews.com

If you do a Forecast with only 1 observation in the forecast period you don't get a forecast evaluation. Perhaps some elements of the evaluation can't be computed, but others can and probably should be.

My quick look suggests that the forecast evaluation is only not reported if there are no observations or if the sum-of-squared residuals is identically equal to zero (or there is an unrelated error). I'm not certain why the three reportable statistics are not shown (to be zero) in this case, but we'll look into it.

Try setting the forecast smpl to 7 7 in the attached.

There are only 6 observation in the original workfile. Forecasting "7 7" means that we add an observation to the workfile with the dependent variable equal to NA. So no forecast evaluation summaries are possible.

Uh, DTD please.