Allin

thanks for the lead ..

Here's what resulted.....

gretl console: type 'help' for a list of commands
? include StrucBreak.gfn
 C:\Users\Brian\AppData\Roaming\gretl\functions\StrucBreak\StrucBreak.gfn
? pkg query StrucBreak
File: C:\Users\Brian\AppData\Roaming\gretl\functions\StrucBreak\StrucBreak.gfn
Package: StrucBreak 0.91 (2021-07-20)
Author: Riccardo "Jack" Lucchetti and Sven Schreiber
Email: svetosch@gmx.net
Required gretl version: 2018b (20181)
Data requirement: Time-series data
Description: Autodetection of structural breaks in linear models, Bai-Perron style

Clearly I'm on the latest Gretl version, not 2018b((20181). But appear to be on the latest StrucBreak Package.

Brian

Then I guess there must be some stale StrucBreak version on your system, and somehow gretl is picking that in the GUI context. It clearly shouldn't do that, but perhaps you could try doing a file search on your computer for other occurrences of the StrucBreak.gfn file.

cheers

sven