I have a RadToolbarDrorDown that allows users to select a different theme. This works fine in Firefox and Chrome, but the dropdown fails to show in IE (v10). It does appear to work with IE 9.0.8 however. In IE 10 I see this script error in the console: SCRIPT5007: Unable to get property 'documentElement' of undefined or null reference ScriptResource.axd, line 147 character 2 Also, the html generated is quite different : see attached Telerik version 2012.1.215.40
The error is because of using a version of the Telerik controls that were created prior to the release of IE10. To fix it you need to update to a newer version of the Telerik Controls. If this is not possible - add the following to the web config file: <httpProtocol> <customHeaders> <add name="X-UA-Compatible" value="IE=9" /> </customHeaders> </httpProtocol>
So far there's been no response from Telerik. For now we are restricted to IE9; although Firefox, Chrome & Opera are fine. [Chrome 26 & 27 do have issues that will be fixed in 28]
I have the same issue. Any resolutions?