Commented Issue: Microsoft JScript runtime error: Unable to get value of the property 'srcElement': object is null or undefined [27274]

I use the Ajax Control Toolkit version 3.5 it works fine until Internet Explorer 8, but in Internet Explorer 9, displays the above message. When to change the compatibility mode for ie 7 or ie8 the componenete works perfectly. Anyone ever had this problem with ScriptsManager in IE 9? The error is displayed in the function ValidatorOnChange ScriptsResources.axd.
Comments: Did you ever resolve this issue? I am experiencing the same issue