[Solved] Grid State Deserialization Error after moving from Telerik.Web.UI, Version=2009.3.1103.35 to 2010 Q1 SP1

[Nick]

Grid State Deserialization Error after moving from Telerik.Web.UI, Version=2009.3.1103.35 to 2010 Q1 SP1

Hi- We have run into an issue where our reports saved with a grid state won't load and return an RTE after we upgraded from RAD 2009 to RAD 2010 Q1 SP1.

While deserialization, it throws an exception as follows:

Could not load file or assembly 'Telerik.Web.UI, Version=2009.3.1103.35, Culture=neutral, PublicKeyToken=121fae78165ba3d4' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

[Princy]

Hi Rajesh,

Please, check whether your web.config file contains references to older version of RadControls for ASP.NET AJAX. Go through the following documentation which describes about the issue and resolution.
General Troubleshooting
Could not load file or assembly 'Telerik.Web.UI'

Also checkout the link that might useful for you: Upgrading RadControls Trial to RadControls Developer license or newer version

Regards,
Princy.

[Nick]

Hi Princy-

We get an error trying to load RadGrad in 2010 which was saved in 2009 using GridSettings.cs. This is our web.config:

        <httpHandlers>
            <add path="Upload.axd" verb="POST,GET" type="clsUpload"/>
            <add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false"/>
            <add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false"/>
            <add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false"/>
            <add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false"/>
            <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false"/>
        </httpHandlers>

Thanx
Rajesh