Here's the console output when when I hit the load cal button...
nick@LM19-2:~$ python3.7 ./nanovna-saver/nanovna-saver.py
NanoVNASaver 0.1.0
Copyright (C) 2019 Rune B. Broberg
This program comes with ABSOLUTELY NO WARRANTY
This program is licensed under the GNU General Public License version 3
See for further details
Settings: /home/nick/.config/NanoVNASaver/NanoVNASaver.ini
Gtk-Message: 17:32:47.985: GtkDialog mapped without a transient parent. This is discouraged.
I get the same Gtk-Message when I save a cal with or without the .cal extension.
The cal files become visible if I give them a .cal extension. Files without the .cal extension are not visible in the object picker even when All Files is selected e.g. bnc_1 and bnc_2 are not visible to the object picker because they do not have the .cal extension.
It is possible to save a cal file without the .cal extension in which case it is hidden from the object picker.
Perhaps the save dialog should force a .cal extension e.g. by adding it automatically to the Name field?
73
Nick