This is likely the fix to the Halloween loop bug. See other thread for discussion.

Thanks. That's probably it. A must-download then.

Speaking of update,

Looking at the latest one I saw the setup was now 2 parts :
starcrawlers_v1_1_3_4_8_oct_2019_33035.sh
and
starcrawlers_v1_1_3_4_8_oct_2019_33036.sh
both are 871Mo big.
(yes, linux version here)

The previous version I had was
starcrawlers_v1_1_3_3_27395.sh
which counted 913Mo.

Do I really have to download and installl both files or is it an error and only the latter one is necessary ?

I don't know.
I had uninstalled the game: The UI is now too poor for what hey have added.
Please devs in future: don't fix your game if it wasn't broken.
You just had to kill bugs, not the game.
At least it was free... Maybe that's why it was badly done.