[GRASS-dev] ** (wxgui.py:19192): WARNING **: invalid source position for vertical gradient

[Markus Neteler]

On Wed, Sep 20, 2017 at 2:01 PM, Vincent Bain <bain at toraval.fr> wrote:
...
> after digging it a little bit deeper, I guess it has rather something to
> do with the environment : I currently work on different debian machines;
> the issue happens when I build the latest trunk version (r:71500) on a
> new/clean debian 9 (stretch). Building the same release on my old debian
> 8 works fine.

Please check the wxPython version, through g.gui > Help > About system

Markus