I downloaded all 7/7 parts and also the 1.01 patch from GOG
the first part opens the installer, when i run it, it says theres files missing, there are ONLY 6 BIN files, part 2-7 are the ONLY bin files, part 1 is the application to start it all.

What files are missing :( this is possibly the most annoying thing ive done, waiting for GMG to give me my key and now this, wtf just give me steam key from now on

Is Part 2 the first part of installation? I dont know why and what is happening