GMod 13, NPCs instantly vanish when killed. [HELP Please]

This pissing me off now, they used to vanish in about 30 seconds, now when killed they just vanish to nothing. I had the Dismemberment mod, but I removed thinking it was a cause of the problem. Once deleted, nothing happened. Same thing kept happening to me. I have NPC Groups, I heard to could be used to fix it. Didn’t work, anyone know how to fix this?

Is keep corpses on?

Activate the “keep corposes” option holding “C”, in the “NPC” tab.