Can't see DDS files

[Yare]

Hello people
I didn't have need to use that for quite long, so I don't even know when it happened. I wanted to use "Falloff Map" on spotlight but my editor doesn't display all the files in texture browser. I can only see two files with tga extention. I tried to paste their full names from the folder to browser, still doesn't work. I reinstalled Amnesia together with level editor and settings and it didn't help as well.
I remember using Falloff Map once long ago and then it was fine.