Question: I created a new ASP.Net MVC 4 project using the template in Visual Studio 2012. After upgrading to jQuery 1.9, the login functionality breaks. Specifically, I get the error

> 
> 0x800a138f - JavaScript runtime error: Unable to get property 'call' of undefined or null reference
> 
> 
> 

at line 1172, column 5 in jquery.validate.js

How can I fix this issue?

Answer: 
This issue is fixed in *jQuery Validation Plugin 1.11.0pre*. 

Unfortunately there is currently no pre-release build on NuGet, so it is currently necessary to download jquery.validation.js directly from GitHub:

[jQuery.Validation 1.11](https://github.com/jzaefferer/jquery-validation) is now available via NuGet (thanks @Simon\_Weaver).

**UPDATE**

It looks like *general* support for jQuery 1.9 is in the jQuery.Validation code base but not yet released

<https://github.com/jzaefferer/jquery-validation/pull/613>
I had the same issue, no problem in firefox but ie still gives the error. I am using jquery-2.0.0; jQuery Validation Plugin 1.11.1

I found a fix:
replace 

```
@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

```

with

```
@section Scripts{
    <script src="@System.Web.Optimization.BundleTable.Bundles.ResolveBundleUrl("~/bundles/jqueryval")"></script>
}

```