Code52 Globalization code crashes when move cursor to switch the language label.

[jiapings]

Hi,
I am following this instruction
http://code52.org/aspnet-internationalization/tutorial.html#add_the_code52i18n_nuget_package
to implement the Code52 internationalization code to my brand new MVC 4 application created from visual Studio 2012 RC MVC 4 template, after implemented the code posted on the above site, successed build without any problem. But when I run the application, and try to switch the language, and move the cursor on "English (United Kindom) [+]", the application crashes, the program stopped at this line of code with yellow color:
fx.elem.style[ fx.prop ] = (fx.prop === "width" || fx.prop === "height" ? Math.max(0, fx.now) : fx.now) + fx.unit;
in jquery-1.6.2.js
A Microsoft Visual Studio error window popup with this message:
Unhandeled exception at line 8564, column 5 in
http://localhost:64807/Scripts/jquery-1.6.2.js
0x800a017c - Invalid property value.

(Break and Continue buttons are available on the bottom the window).

My computer is using Window 7, and I am using Visul Studio 2012 RC, the probject was created from MVC 4 template.
By the way, in the instruction
http://code52.org/aspnet-internationalization/tutorial.html#add_the_code52i18n_nuget_package
In the Resource file creation section, it did not menton the creation of Resources folder, it just mentoned the creation of resources file of Language.resx, but I got compile time error, after I checked the code, I think I should create Resources folder to hold Language.resx and Language.fr.resx files. The build was successful after this Resources folder creation.

Please let me know if you need more info.