For the offline installer the patch from 77973 to 77988 is missing

Those things happen quite frequently and I find it rather sloppy to be forced to download the whole crap again. But if they want it that way ...

There is nothing anyone on this board can do to help with that. Best you let GOG and Paradox know.

I was afraid so. I try to get the attention of TriumphJordi from their forums for the matter.

That happen with other games too. Somewhat there is only one slot for updates in a way GOG offer content management is my guess. Maybe its cost reduction that way. More slots, more expense. But indeed, this his truly nonsense. Having massive bandwidth loss that way. But as some told already, if GOG like to carry the weight they can have it.

Well reinstall sucks and waiting for download sucks too. Developer know the problems very well. They could develop Patches adaptive so one file gets just bigger and keep all the patches in it. But well, my guess, the bigger the patch file, the more expensive is it. So developer stay simple and abide by the stupidity GOG price management lay upon them. If only there departments in cost control would talk to each other. But my guess is, even half a zlotty more is worth the trouble with the community. I dont think that there is more gain in it then that.