And so the parameters can not be changed. And the game remains at the version 1.02 !
I didn't find any subject relative to this behaviour.
Any idea ?
Thank you
[EDIT] Solved : I simply forgot to register the game, and as I could play with it (no DRM), I didn't think about it !

Click on more and verify the files. It should see that it's not the latest version and download it.

Thank you JMich for your help

But the "Check files" function is also in grey and so inactive.
I also tried to open GOGO Galaxy client with admin provileges but it dindn't change anything.

Any other ideas ?

Nvm

Are you sure you have registered The Witcher with gog? Judging by the picture, doesn't seem so.. Please, check your orders history. Where did you get the game anyway?

Dear Mike, you got it !

I'm a stupid idiot ! Not used to without-DRM games, I've forgot to registrer the game . Cool to be aware of that after gaming 40h ....
Thank you everyboby and apologies for the inconvenience.
(this game is terrific - the profundity of its background is absolutely staggering !)

Be sure to read the books too... They are awesome... and also it helps to understand the background and story of the games.

You're very welcome my friend!
Don't be too harsh on yourself, sometimes things are getting out of hands on their own ; )
Wish you a great time with The Witcher, already finished the game twice on pc and once on ps. Also give the very first Witcherr game a try.

I have all 3 but I've starded with the 3rd .......