diff --git a/aspnet35.config b/aspnet35.config
index 2eca4afb9a..63c961cf58 100644
--- a/aspnet35.config
+++ b/aspnet35.config
@@ -178,7 +178,7 @@
       <add name="umbracoRequestModule" type="umbraco.presentation.requestModule" />
       <add name="viewstateMoverModule" type="umbraco.presentation.viewstateMoverModule" />
       <add name="umbracoBaseRequestModule" type="umbraco.presentation.umbracobase.requestModule" />
-      <add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
+      <add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
       <add name="ClientDependencyModule" type="ClientDependency.Core.Module.ClientDependencyModule, ClientDependency.Core"/>
     </modules>
 
@@ -192,9 +192,10 @@
       <remove name="ClientDependency" />
       <remove name="SpellChecker" />
 
-      <add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
-      <add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
-      <add name="ScriptResource" verb="GET,HEAD" path="ScriptResource.axd" preCondition="integratedMode" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
+      <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" />
+      
       <add verb="*" name="Channels" preCondition="integratedMode" path="umbraco/channels.aspx" type="umbraco.presentation.channels.api, umbraco" />
       <add verb="*" name="Channels_Word" preCondition="integratedMode" path="umbraco/channels/word.aspx" type="umbraco.presentation.channels.wordApi, umbraco" />
       <add verb="*" name="ClientDependency" preCondition="integratedMode" path="DependencyHandler.axd" type="ClientDependency.Core.CompositeFiles.CompositeDependencyHandler, ClientDependency.Core "/>