DOM Exception: INVALID_CHARACTER_ERR (5)

Question

In one aspx page which is running in IE9 got following script Error message. That page also having telerik controls.

Does anybody have experince with this ?

Message: DOM Exception: INVALID_CHARACTER_ERR (5)
Line: 3422
Char: 8
Code: 0
URI: http://localhost/AbcWeb/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_RadScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen%3a1f68db6e-ab92-4c56-8744-13e09bf43565%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%3aen%3a183fb741-216d-4765-9b46-4a1f5d38fdd7%3a16e4e7cd%3af7645509%3aed16cbdc%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen%3a1f68db6e-ab92-4c56-8744-13e09bf43565%3a76254418%3bTelerik.Web.UI%2c+Version%3d2010.2.929.40%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen%3a183fb741-216d-4765-9b46-4a1f5d38fdd7%3a874f8ea2%3a24ee1bba%3a19620875%3a490a9d4e%3abd8f85e4%3a9cdfc6e7

Answer 1

IE9 was released in March 2011. In the URL you posted, I see the Telerik version is 2010.2.929.40 (September 2010). Perhaps this is just a compatibility issue with the older Telerik version and the new browser? What you can do is either get a newer RadControls build, or force your page to use IE8 rendering. For more information about IE compatibility modes, see http://msdn.microsoft.com/en-us/library/cc288325%28v=vs.85%29.aspx

TL;DR - Add the following meta tag in the header of your page and see if it makes a difference:

<meta http-equiv="X-UA-Compatible" content="IE=IE8" >