RadDatePicker Calendar not showing - IE8, SharePoint 2007

[AR]

Hi,
We have an intranet application which is using Rad controls including the DatePicker. This application is hosted on SharePoint (asp.net usercontrols wrapped loaded via webparts) and standard browser is now IE8 (upgraded from IE6 - where the RadDatePicker was working fine).

On IE8, when users click on the image next to the DatePicker text box to open calendar; it results in an error

error when page is using asp.net ScriptManager on the page:

 

<P>Webpage error details</P>
<P>User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; WOW64;
Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022;
.NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)<BR>Timestamp: Tue, 13 Nov 2012
06:47:37 UTC</P>
<P><BR>Message: Invalid argument.<BR>Line: 179<BR>Char: 10<BR>Code: 0<BR>URI: <A
href="http://*****/ScriptResource.axd?d=fLLEnEfYpOt4GMIbTZNyqmhk-31e3wJHybVyNYzLJv27gWqDUqa--SzYCC1OTlKNDzdpjDDRmKwqltaEyEHFzydCk7G3stc-u1jnR-wmFZKFiKJBgmJKvIJUh5FjhwyT0SbSsm6GO_1HAiYZ0VU9LAj51xk6CViN2qubb57KTvUgelnGIpUK5PxUtxWGwUYA5RKcKg2&t=5e2e7a27">http://*****/ScriptResource.axd?d=fLLEnEfYpOt4GMIbTZNyqmhk-31e3wJHybVyNYzLJv27gWqDUqa--SzYCC1OTlKNDzdpjDDRmKwqltaEyEHFzydCk7G3stc-u1jnR-wmFZKFiKJBgmJKvIJUh5FjhwyT0SbSsm6GO_1HAiYZ0VU9LAj51xk6CViN2qubb57KTvUgelnGIpUK5PxUtxWGwUYA5RKcKg2&t=5e2e7a27</A></P>

error when page is using Telerik ScriptMaanger (with EnableScriptCombine="true"):

<P> </P>
<P>Webpage error details</P>
<P>User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; WOW64;
Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022;
.NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)<BR>Timestamp: Tue, 13 Nov 2012
06:32:08 UTC</P>
<P><BR>Message: Invalid argument.<BR>Line: 8749<BR>Char: 10<BR>Code: 0<BR>URI:
<A
href="http://*****/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=RadScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d3.5.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a55ab6258-ebc5-40d7-ae7b-b95de6f72668%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2010.3.1109.35%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a62e881c6-518e-447d-b6e7-1af83cb2d164%3a16e4e7cd%3af7645509%3a24ee1bba%3af46195d3%3a58366029%3a8674cba1%3ab7778d6c%3ac08e9f8a%3aa51ee93e%3a59462f1">http://*****/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=RadScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d3.5.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a55ab6258-ebc5-40d7-ae7b-b95de6f72668%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2010.3.1109.35%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a62e881c6-518e-447d-b6e7-1af83cb2d164%3a16e4e7cd%3af7645509%3a24ee1bba%3af46195d3%3a58366029%3a8674cba1%3ab7778d6c%3ac08e9f8a%3aa51ee93e%3a59462f1</A></P>

Previously on IE6, there has not been any issues.
Using 2010.3.1109.35
Web.config has the usual http handlers in place (Telerik.Web.UI.DialogHandler.aspx, Telerik.Web.UI.SpellCheckHandler.axd, Telerik.Web.UI.WebResource.axd)

[Maria Ilieva]

Hello,

Could you please upgrade the application to the latest official release and verify if the same issue appear? Also you could review the help topics below which present different approaches for handling RadControls resources issues:
http://www.telerik.com/help/aspnet-ajax/troubleshooting-radscriptmanager.html
http://www.telerik.com/help/aspnet-ajax/introduction-web-resources-troubleshooting.html
http://www.telerik.com/help/aspnet-ajax/introduction-troubleshooting.html

I hope this helps.

Kind regards,
Maria Ilieva
the Telerik team