Platinum didn't pop

By Eli_bloodthirst,
So I just got he last trophy for the base game on WaW, something I didn't think I'd ever do, but it never popped and I don't know what to do.    I'm thinking it might be because I've had missing timestamps on it (due to a HDD corruption back in 2012) but I've redone all the trophies just in case, any ideas?