kbnrylaec: Sometimes, GOG's offline installer can not install games. [1]
They just provide broken garbage to their users.
If they did test basic stuff for every single installer, those bugs should never happened.
GOG's testing is just a joke.
Making a mistake when packing the installer has got nothing to do with testing a patch a dev provides. I mean, yeah, you're right, they should test if the GOG installer works before they offer it for download. But this isn't related to testing patches. "Testing patches" sounds really weird to me, to be honest. I'd definitely like to know what it even means, because... There's really only three possibilities:
1. Basic test regarding functionality (Does the game still start? Do saves still work?)
2. Full-fleged testing (playing through the the whole game, trying different things to find bugs)
3. Something in-between
1. shouldn't be called "testing" (it's just a short check) and definitely shouldn't cause a patch to be delayed for several days. 2. is just not going to happen. Seriously, that's way too much work. Not even the developers of the game will do this. And 3.? Well, that's kind of a waste of time... Checking random things of the game for completely random NEW bugs would be totally stupid.