From the error you are describing it appears that you are using the Telerik AppBuilder web client with the Kendo UI Grid demo. The error message states that the everlive.all.js
Because the sample uses a relative path to the resource, it is not available in the context of the AppBuilder simulator.
Please, import the JS SDK as explained here
and fix the script tag path to the correct one.
Let me know if you have questions.
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI