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Again, EViews will automatically use the same observations. Thus with a maximum lag of 5, and with a total of 49 observations, 44 will be used for all comparisons. With a maximum lag of 10, 39 will be used. Thus your two examples are using different observations, so it is not surprising that they gi...

No. When comparing different models of any kind (including VARs), you have to use the same set of observations for all of the models. From your brief description it sounds as though you are not doing this. It still isn't clear what you mean by "incorrect log likelihoods". What makes you th...

A static forecast gives you fitted values.

I'm not sure I follow what you're saying here.

How does EViews use the incorrect standard errors, and how does your method change that?

Will put the 10th value of the series X into the table.

It means the observations used in the final estimation are not exactly the same as those used during the stepwise selection (due to NAs).

It does not invalidate the results.

It automatically creates a set of dummies based upon the unique values in a series.

We continuously evaluate Mac, Linux, and cloud versions. Whilst you are correct that Mac has made large in roads in one small market segment, obviously it is still the case that Windows machines massively dominate the EViews target market. I would not be at all surprised if a Mac version did appear,...

If you already have a dummy variable, you do not need to use @expand. Just include the dummy variable by itself.

You'll have to write a program that loops through the series and performs X11 on each of them one at a time.

It means something went wrong.

In general you shouldn't be using the READ command. Trying using WFOPEN or IMPORT instead.

When writing an explicit expression for an equation, you cannot use C as a constant, and you must list the coefficients you want to use. Thus, you should change your equation to be:

The vector myownimpulse_se contains the standard errors. Thus a 1SE band is calculated as myownimpulse+1*myownimpulse_se and myownimpulse-1*myownimpulse_se

All of your comments are valid for EViews 6. However I believe all of those "problems" are gone in EViews 7. Notably EViews 7 can handle {{...}}.