MVC3 client validation not working

Question

I have a required annotation on my model:

[Required(ErrorMessage = \"Please choose an option\")]
public bool? AnyDebts { get; set; }

I have

Answer 1

For my case, it only happens when using IE in quirks mode, my settings are Browser Mode: IE9, Document Mode: Quirks. This results in client side validation not working for me. However, the same page works well in Firefox,Chrome, and IE9, Browser Mode: IE9, Document Mode: IE9 standards when using the developer toolbar. Not that its a solution, but a possible lead