I left the game to download due to its large size, and when I got home from work the installer wasn't automatically up like it usually is. I went straight to the GOG Downloader file on my computer and tried to install from there, but it claims that there are files missing (specifically, file 11, but it only seems to go up to 8, so I have no clue where it even got 9 and 10 from).

Do I have to download this again. or is there another way?