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Could not load file or assembly Telerik.Web.UI

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ScriptManager and StyleSheetManager
This is a migrated thread and some comments may be shown as answers.
Devon
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Devon asked on 24 Nov 2010, 04:12 PM
I added the reference to Telerik.Web.UI.  Both the .net framework and the dll are for version 3.5.  I have added the radinput box and everything worked fine.  But when I hadded the rad script manager I received the error, Could not load file or assembly Telerik.Web.UI in the actual VS Designer.  There are no smart tags that I can see to force the update in the web.config for the httphandlers section.  Is there a way to turn smart tags on?

Any suggestions on how to resolve this issue?

Thanks



<?

 

xml version="1.0"?>

 

<

 

configuration>

 

<

 

configSections>

 

<

 

sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">

 

<

 

sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">

 

<

 

section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>

 

<

 

sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">

 

<

 

section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>

 

<

 

section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>

 

<

 

section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>

 

<

 

section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/></sectionGroup></sectionGroup></sectionGroup></configSections><appSettings/>

 

<

 

connectionStrings/>

 

<

 

system.web>

 

<!--

 

 

Set compilation debug="true" to insert debugging

symbols into the compiled page. Because this

affects performance, set this value to true only

during development.

Visual Basic options:

Set strict="true" to disallow all data type conversions

where data loss can occur.

Set explicit="true" to force declaration of all variables.

 

 

-->

 

<

 

compilation debug="true" strict="false" explicit="true">

 

<

 

assemblies>

 

<

 

add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>

 

<

 

add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

 

<

 

add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>

 

<

 

add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>

 

<

 

add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>

 

<

 

add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>

 

<

 

add assembly="System.Speech, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

 

<

 

add assembly="Telerik.Web.Design, Version=2010.2.929.35, Culture=neutral, PublicKeyToken=121FAE78165BA3D4"/>

 

</

 

assemblies></compilation>

 

<

 

pages>

 

<

 

namespaces>

 

<

 

clear/>

 

<

 

add namespace="System"/>

 

<

 

add namespace="System.Collections"/>

 

<

 

add namespace="System.Collections.Specialized"/>

 

<

 

add namespace="System.Configuration"/>

 

<

 

add namespace="System.Text"/>

 

<

 

add namespace="System.Text.RegularExpressions"/>

 

<

 

add namespace="System.Web"/>

 

<

 

add namespace="System.Web.Caching"/>

 

<

 

add namespace="System.Web.SessionState"/>

 

<

 

add namespace="System.Web.Security"/>

 

<

 

add namespace="System.Web.Profile"/>

 

<

 

add namespace="System.Web.UI"/>

 

<

 

add namespace="System.Web.UI.WebControls"/>

 

<

 

add namespace="System.Web.UI.WebControls.WebParts"/>

 

<

 

add namespace="System.Web.UI.HtmlControls"/>

 

</

 

namespaces>

 

<

 

controls>

 

<

 

add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

 

<

 

add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></controls></pages>

 

<!--

The <authentication> section enables configuration

of the security authentication mode used by

ASP.NET to identify an incoming user.

 

 

-->

 

<

 

authentication mode="None"/>

 

<!--

The <customErrors> section enables configuration

of what to do if/when an unhandled error occurs

during the execution of a request. Specifically,

it enables developers to configure html error pages

to be displayed in place of a error stack trace.

<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">

<error statusCode="403" redirect="NoAccess.htm" />

<error statusCode="404" redirect="FileNotFound.htm" />

</customErrors>

 

 

-->

 

<

 

customErrors mode="Off"/>

 

<

 

httpHandlers>

 

<

 

remove verb="*" path="*.asmx"/>

 

<

 

add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

 

<

 

add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

 

<

 

add verb="GET,HEAD" path="ScriptResource.axd" validate="false" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></httpHandlers>

 

<

 

httpModules>

 

<

 

add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></httpModules></system.web>

 

<

 

system.codedom>

 

<

 

compilers>

 

<

 

compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CSharp.CSharpCodeProvider,System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">

 

<

 

providerOption name="CompilerVersion" value="v3.5"/>

 

<

 

providerOption name="WarnAsError" value="false"/></compiler>

 

<

 

compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">

 

<

 

providerOption name="CompilerVersion" value="v3.5"/>

 

<

 

providerOption name="OptionInfer" value="true"/>

 

<

 

providerOption name="WarnAsError" value="false"/></compiler></compilers></system.codedom>

 

<

 

system.webServer>

 

<

 

validation validateIntegratedModeConfiguration="false"/>

 

<

 

modules>

 

<

 

remove name="ScriptModule"/>

 

<

 

add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></modules>

 

<

 

handlers>

 

<!--

 

<add path="Telerik.Web.UI.WebResource.axd" verb="*" type="Telerik.Web.UI.WebResource, Telerik.Web.UI, Version=2010.2.929.35, Culture=neutral, PublicKeyToken=121fae78165ba3d4"

 

name="Telerik.Web.UI.WebResource"/>

 

-->

 

<

 

remove name="WebServiceHandlerFactory-Integrated"/>

 

<

 

remove name="ScriptHandlerFactory"/>

 

<

 

remove name="ScriptHandlerFactoryAppServices"/>

 

<

 

remove name="ScriptResource"/>

 

<

 

add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

 

<

 

add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

 

<

 

add name="ScriptResource" verb="GET,HEAD" path="ScriptResource.axd" preCondition="integratedMode" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></handlers></system.webServer>

 

<

 

runtime>

 

<

 

assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">

 

<

 

dependentAssembly>

 

<

 

assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>

 

<

 

bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/></dependentAssembly>

 

<

 

dependentAssembly>

 

<

 

assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>

 

<

 

bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/></dependentAssembly></assemblyBinding></runtime></configuration>

 

1 Answer, 1 is accepted

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Simon
Telerik team
answered on 29 Nov 2010, 12:11 PM
Hi Devon,

If this error has happened after updating to a newer version, a possible cause is that the version in the reference to the Telerik.Web.Design assembly does not match the version of the new assembly. In your web.config you have the following reference:
<add assembly="Telerik.Web.Design, Version=2010.2.929.35, Culture=neutral, PublicKeyToken=121FAE78165BA3D4" />

I suggest you either update the above version to match that of the updated assembly or remove the ", Version.." part entirely.

I hope this helps.

Greetings,
Simon
the Telerik team
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ScriptManager and StyleSheetManager
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Simon
Telerik team
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