triock: It's not normal, same thing also with Alien vs Predator installer.
Don't worry, it's not a message from the other world, it's GOG fault. :p
Tolya: It's actually Microsoft's fault, some redistributable libraries we bundle with the installer are doing this. We will fix this very soon.
Sorry for the late reply, the forum message notification is a little out of sight as the account tab always has something updated or new so kind of ignore it most of the time.
Thanks for the explanation. Would've been nice to get a little warning when this was going to happen in case I had something important open and not saved but no harm no foul in my case this time.