ULX Slaynr Error?

My ULX won’t let me slay anybody for the next round.
Normally it works fine, it started about a day ago.
it basically says once you try.
“<Player> will not be slain next round”

This is for both the ULX menu, and the Advanced Damage Logger/RDM tool.
I’ve had a quick Google search i saw someone with the same issue, but it was months ago and no response for a fix.
I’m guessing this is a maybe a known issue, someone point my dumb-ass in the right direction please?