Alright, I figured out the issue, the server checks to make sure the players are not in the same party, but it does it wrong, so I just commented out that code, I’m lazy. But here’s the quick fix.
Just copy the folder into your server folder and replace all the files (hopefully you didn’t edit the code, if you did do some edits, then find the line
If TempPlayer(Victim).inParty = TempPlayer(Attacker).inParty Then Exit Function
```and comment it out
Here's the download to the fix (for those who can't edit the source) http://www.mediafire.com/download/5ixm1uuco66x716/Seb+Engine+PvP+Fix+server.zip
I'm posting this just in case the attachment ever goes down