Well that was a formatting fail.

I've run in to the same problem.

The following code fails in unity at runtime with the "TypeLoadException: A type load exception has occurred" error, but works fine in .net

[code]
TestChannel.Gizmos.Draw();
TestChannel2.Gizmos.Draw();

[/code]

[code]
public static class NestedGenricTest {
public class Channel<T> where T : Channel<T>, new() {
private static T s_ChannelInstance;

private static T Instance {
get {
if (s_ChannelInstance == null) {
s_ChannelInstance = new T();
}
return s_ChannelInstance;
}
}

private string m_Name;

protected Channel(string name) {
m_Name = name;
}

public static class Nested {
public static void Draw() {
Console.WriteLine("{0}.Draw()",Instance.m_Name);
}
}
}
}

public class TestChannel : NestedGenricTest.Channel<TestChannel> {
public TestChannel() : base("TestChannel") {

}
}
public class TestChannel2 : NestedGenricTest.Channel<TestChannel2> {
public TestChannel2() : base("TestChannel2") {

}
}
[/code]