Hello Scott,

The observed error is caused by the fact that the boolean value is not provided as is, but as a string, and the string 'false' is evaluated to true as a boolean value. Then a JavaScript error occurs, as no configuration properties for the animation are found.

You can omit the inner pair of quotes, and the Tabstrip's animations will be disabled as expected:

http://dojo.telerik.com/OCaye/2

Alternatively, you can override the default animations option value via the TabStrip's prototype:

http://dojo.telerik.com/OCaye/3

I hope this helps.

Regards,
Dimiter Topalov
Telerik by Progress