I have the same Problem the server is Keep crashing .. hoped that it would be fixed in 3.1.1 but it isn't. I tryed it on a blank server and the server crashed.
Title: Turtles doensn't Mine
Version: 3.0.3/3.0.4
OS: 2600k 16gb ram 2008 server
Java Version: 7
Description of Problem:
Turtles doesn't mine. ComputerCraft folder is Renamed and [ComputerCraft] is op but it doesn't help. I'm using PermissionsEx.
Error Messages:
Error Log: