darkwar.wad error

[malariaxxx]

When i execute ./EDGE ./darkwar.wad in linux show this error:

No textures found ! Make sure the chosen IWAD is valid.
I have these files and folders on the directory:

base
soundfont
darkwar.rtc
darkwar.rtl
darkwar.wad
demo1_3.dmo
demo2_3.dmo
demo3_3.dmo
demo4_3.dmo
edge.epk
EDGE
huntbgin.rtc
huntbgin.rtl
remote1.rts
These files were extracted from GOG version