OS Version: Windows 7 x64
McMyAdmin Version: 0.9.3.1
Prolem Summary: When I join my own server, and no one else is there, it works fine for me. But when I am in the server with anyone else, I disconnect with bad packet ID errors, and everyone else is fine.
Actions to reproduce the problem: Whenever I join, I get kicked with the bad packet id errors eventually.
Expected ehaviour: It shouldn't disconnect me.

 

Unrelated to McMyAdmin - sounds like clients haven't updated, are using mods, or bukkit is out of date.

 

Thanks for the quick reply. I know it isn't to do with McMyAdmin, but I thought I could get some good feedback from knowledgeable people here. Do I need to download bukkit in order to use this? I downloaded it a couple of days ago, so it is the most recent version. Clients aren't using mods.

 

You don't need bukkit, but it is supported. Try asking in the Minecraft forums.