First up that could not load image is your main issue.
That means your root/main/iw_02.iwd is damaged and is missing default.
Verify your game's integrity with Steam and make sure your IWD's are redownloaded (delete main).
$default is a stock material that should exist in one of the original fastfiles.
Welp guys i'm here with another random ass topic i thought of. so paste the last thing you copied here. no porn. if you copied an image just link it with imgur something. if you have code use the insert code button.