>When you say at design time, everything works - does this mean during testing, you have tried this on machines that at runtime - do not work? Or, when you tested, you only tested on your machine?

Yes. IN design time everything works ok in all machines. And if i launch exe file from command's window too.

In run time (exe file) only works in my main computer

>
>You will want to make sure that you have both SP 3 of VS and SP 1 of Office on any machine your app will be deployed.

I have not in none of these computers.