Can't find materials in .blend file I downloaded a material from http://matrep.parastudios.de/index.php. By my understandings you just need to download the .blend file, open your project, go to append and find in the .blend file the material. But when I open the file, it's empty.

Maybe anyone had this problem and can help me out? Maybe I'm missing something.
I tested downloading a material there myself, and had similiar problems like you. Neither appending nor linking were possible. On opening the file itself, blender complains about File format is not supported. So I guess you just have to look for another material. Maybe this site is outdated.

Try this link: Resources for blender.