That happened to me for the K1 Full Build. I got around it by following the download link at the top of the summary in KotorMS and grabbing whatever files were missing according to the log in the console window. Here I goofed a file name on purpose to show you what I mean. You can see it cannot find the file I changed the name of so the console screams about it in red and I used that to pull up the what it needs. Screenshots are in spoiler to keep post footprint down.