Hi! i purchased this game and downloaded all of the content there is, i don't know if i am missing anything or what I am doing wrong but the installation prog says there is files missing,(edit: i counted that the Goty edition has 39 files for it 10 for the game 1 exe 9 .bin and i have all of them installed, do i have to install every game goodie?) In the image there are all the witcher files i have downloaded

The ONLY files you need to install the game are:
setup_witcher3_en_goty_2.0.0.51.exe
setup_witcher3_en_goty_2.0.0.51-1.bin
setup_witcher3_en_goty_2.0.0.51-2.bin
setup_witcher3_en_goty_2.0.0.51-3.bin
setup_witcher3_en_goty_2.0.0.51-4.bin
setup_witcher3_en_goty_2.0.0.51-5.bin
setup_witcher3_en_goty_2.0.0.51-6.bin
setup_witcher3_en_goty_2.0.0.51-7.bin
setup_witcher3_en_goty_2.0.0.51-8.bin
setup_witcher3_en_goty_2.0.0.51-9.bin

You also have some duplicates in there (setup_witcher3_en_goty_2.0.0.51-5(1).bin and setup_witcher3_en_goty_2.0.0.51-5(2).bin). The (1) and (2) are the giveaway that your browser has duplicated and renamed the setup_witcher3_en_goty_2.0.0.51-5.bin file.

It's checking the file integrity.Deleting the duplicates did solve it! Thank your kind soul!!!

Great. Just remember that the installation can take quite a while, so be very patient. Have fun.