We are using Telerik 2016.2.607 and Asp.Net in 4.5.1.
I have set this in master page:
But our IS starts to throw error:
Unhandled exception at line 730, column 49 in http://ajax.aspnetcdn.com/ajax/4.6/1/MicrosoftAjax.debug.js
Parameter name: instance
Setting ScriptManager to
fixes this, but I want to combine files.
Is there any way how to check what is wrong?