Thanks for your help Artur and Jack! Yes,  I was using the latest version of Gretl and the package.  
I tried again with two computers. One stationary, Windows 10 and my Laptop with the aforementioned specification. In the spanish version I got exactly the same error message and when I changed to English, "MSFT imported ok" 

I will try it again with other languages and I come back to you

Best   




El mar, 14 may 2024 a las 8:06, Riccardo (Jack) Lucchetti (<p002264@staff.univpm.it>) escribió:
On 14/05/2024 07:44, Artur T. wrote:
> Am 14.05.24 um 01:06 schrieb Cristián Arturo Ducoing Ruiz:
>> Hi there,
>>
>> I was trying to get data from Yahoo using the package yahoo_get and
>> after several attempts to get the data, I always got the same error
>> message ("error de datos", data error in english). By default the
>> configuration was in Spanish.
>>
>> I changed the preferences to English and using the same code, I got
>> immediately the data requested (MSFT)
>>
>> include yahoo_get.gfn
>> series msft = yahoo_price("MSFT", 1)
>> MSFT imported ok
>> Generated series msft (ID 2)
>>
>> Im using windows 11 and the latest gretl version (2024a)
>
> On my Ubuntu machine using gretl developer version a couple of days old,
> the following script works fine:
>
> <hansl>
> include yahoo_get.gfn
> nulldata 1000
> setobs 7 2000-01-01 --time-series
> series msft = yahoo_price("MSFT", 1)
> </hansl>

I just tried a similar experiment on a Win10 PC and all was fine.
Cristián, are you using the latest version of the package (3.5)? There
was an issue with decimal separators, but it was fixed with version 3.2.

-------------------------------------------------------
   Riccardo (Jack) Lucchetti
   Dipartimento di Scienze Economiche e Sociali (DiSES)

   Università Politecnica delle Marche
   (formerly known as Università di Ancona)

   r.lucchetti@univpm.it
   http://www2.econ.univpm.it/servizi/hpp/lucchetti
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--
Atte.
Cristián Arturo Ducoing Ruiz