Hi,

There appears to be a strange error related to the function package GUI in Package: yahoo_get 3.9 (2026-01-20) for gretl 2026a.

When I run the following script, everything works correctly:

nulldata 1000
setobs 5 2022-06-01  # a daily dataset should already be in place
delete index
series apple = yahoo_price("aapl")         # get Apple, adjusted price only
list L = yahoo_full("msft")

However, when I access the same functionality through the GUI (as shown in the attached file), I receive the error message:
"Argument 1 (ticker) is missing."

I conducted quick tests on versions 2025a and 2025b, and no such error occurred.
However, version 2025c also produces the same error message:
"Argument 1 (ticker) is missing."

Is there something changed since the version 2025c?

best regards,

Yi-Nung