Installing Material Into Library

Helo, I ve just install the latest version on my new computer but I didn't get some of the materials after download and extracting it into the Material Library and scene..tho all of the Global install is ok. I try to re=extracting the file into Model folder but also failed to get it appear in my KT .. Please help? Thank you.

Have you manually put them in the folder? Try to use KT's install feature instead: don't unzip the folders, open KT then go to file-->install library and browse the zipped folder.