I have a problem with my uncooking as well this is what my cmd says when I use the command
C:\Witcher 3 Mod Tools\bin\x64>wcc_lite uncook -indir="C:\Program Files (x86)\GalaxyClient\games\The Witcher 3 Wild Hunt\content" -outdir="C:\Witcher3Modding\Uncooked" -imgfmt=tga
[2015.08.18...