how to forecast with markov regime switch model?

[tanghanpost]

Hi,
I am using the data which provided by eviews 8-GNP_hamilton,i create a markov regime switch model, I changed the eqation by dynamic: g c g(-1), the non-switching regressors still are-ar(1) ar(2) ar(3) ar(4), and i chosed the "regime specific error variances", after the estimation, I want to forecast the dependent variable-g, but forecast has teld me that " the SIGMA is not defined". I don't know what wrong with the equation?
Another,
I fined that the forecast dialog is-"SIGMAf" not the variable i want-the dependent variable "gf", then how to use the markov switch model to forecast the dependent variable?
Thank you for spending time to answer me.
Tanghan

[EViews Glenn]

What's the date on your copy of EViews?

[tanghanpost]

Sorry, I don't know the date,
But does it important to the model?
may i change the date, can solve this?

[EViews Glenn]

Select Help/About EViews from your main menu. I believe that this is related to a bug that was fixed some time ago, and wanted to double check that your copy was prior to the fix. Alternately, use Help/Update to update your copy of EViews to the latest shipping version.

[tanghanpost]

Thanks for your help.
Do you mean the date of Eviews 8 is -Standard Edition - Jul 2 2014 build?
I had update Eviews to the latest, but the problem still .

[EViews Glenn]

Okay, I'll take a look. I just thought of one thing. Can you please reestimate your equation by clicking on the estimate button and then try again? Thanks.