Replays / demos not working

when i load my et and select etpro mod and click replays and then when i go to load the demo i want and any other demos i get this error:

Not a JPEG file: starts with 0x5d 0x61
compressed textures: enabled
anisotropy: 1
NV distance fog: disabled
Forcing glFinish
Initializing Shaders
----- finished R_Init -----
LOADING... collision map
LOADING... sounds
voice chat memory size = 3168

.........................
Initializing Sound Scripts
...loading 'sound/scripts/vo_allies.sounds'
...loading 'sound/scripts/vo_axis.sounds'
...loading 'sound/scripts/supply.sounds'
done.
WARNING: Couldn't find image for shader etpro/supply/gfx/loading/camp_map
WARNING: Couldn't find image for shader etpro/supply/gfx/loading/pin_axis
WARNING: Couldn't find image for shader etpro/supply/gfx/loading/pin_allied
LOADING... graphics
LOADING... maps/supply.bsp
----- CL_Shutdown -----
RE_Shutdown( 1 )
Shutting down OpenGL subsystem
...wglMakeCurrent( NULL, NULL ): success
...deleting GL context: success
...releasing DC: success
...destroying window
...resetting display
...shutting down QGL
...unloading OpenGL DLL
-----------------------
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