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Unhandled exception in Telerik.Web.UI.WebResource.axd? (IE11)

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ScriptManager and StyleSheetManager
This is a migrated thread and some comments may be shown as answers.
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Application asked on 06 Jul 2017, 11:06 AM

I'm working on an asp.net project where i have a master page and content pages. Im getting an exception message when i place a timer on one of the content page which is ticking at a certain interval and rebinding the grid using rebind method. I have got  a RadScripManager placed on my master page. Im also using radajaxmanager for the timer.

Im using latest 2017 telerik controls and browser is IE version 11. i have tested my code with chrome and Firefox and no exception is occurring with the browsers,.

When i get an exception my page is zoom in automatically. Can you please guide me. Details of an exception is below

 

Unhandled exception at line 17198, column 28 in http://localhost:60682/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=RadScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=;;System.Web.Extensions,+Version=4.0.0.0,+Culture=neutral,+PublicKeyToken=31bf3856ad364e35:en-US:b59ca51d-6c90-4be1-88fb-6dda83097045:ea597d4b:b25378d2:76254418;Telerik.Web.UI,+Version=2016.2.607.45,+Culture=neutral,+PublicKeyToken=121fae78165ba3d4:en-US:fb63f838-b932-4810-8e72-f1ca43eff960:16e4e7cd:f7645509:33715776:7c926187:8674cba1:88144a7a:b7778d6c:c08e9f8a:59462f1:a51ee93e:58366029:24ee1bba:f46195d3:ed16cbdc

0x80070057 - JavaScript runtime error: Invalid argument.

 

The line where im getting an exception 

Telerik.Web.UI.RadAjaxControl.prototype.updateHeadStyles [Telerik.Web.UI.WebResource.axd] Line 17198 Script

and exception line is 

}if(e[c].indexOf("{")!=-1){f.insertRule(e[c]+"}",f.cssRules.length);

 

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Vessy
Telerik team
answered on 07 Jul 2017, 03:12 PM
Hello,

Please, make sure that the IE11 browser is not running in Compatibility mode as it is not supported and may lead to such issues:
http://www.telerik.com/aspnet-ajax/tech-sheets/browser-support

Also, you stated that you are using the latest version of the controls (2017.2.621), but the thrown error indicates a reference to version 2016.2.607.45. Can you please, make sure that there are not any remaining references in you project pointing to this version? I would also advise that you also check the *.proj file of the application by opening it in a text redactor (i.e., NotePad++) and search for any remaining references to the 2016 version of the controls there.

The following blog posts provides detailed steps on how to successfully upgrade a project, you may find it useful:
http://www.telerik.com/blogs/upgrade-the-version-of-your-telerik-asp.net-controls-in-6-easy-steps

If non of the above helps, please, send us a runnable simple project where the problem can be replicated, so we can examine the cause for it further at our end.

Kind regards,
Vessy
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