We are using the kendo validator and running into issues using input boxes in an array (name="something")
Using firebug to add the square brackets to the name on your own demos throws exactly the same error.
Strangely enough in one situation the array and validator do work together but in most they don't.
In the one situation that does work, I find it breaks with the same error if any field doesn't validate.
Where it always fails it does validate correctly if the array is removed.
I am a commercial customer so please let me know if a hotfix for this is released.