Starting with version 2.76, the cart has a tabbed interface for the product description on product detail page that allows you to configure up to 5 tabs for each product. The tabbed interface was implemented using the ajax tab control which is part of the ajax control tool kit. If you are running .net framework 2.0 you may need to update your web.config with the following entry that will provide cross compatibility:

<runtime>

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

<probing privatePath="bin;bin\HttpModules;bin\Providers;bin\Modules;bin\Support;"/>

<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>

Also here is a link on it:

forums.asp.net/p/1238861/2268687.aspx...

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Scott Kelly
Project Manager

When you upgraded did you install over the old version of the cart? In v2.76 we fixed a bug in the install script that was not copying the new dlls when upgrading. So if you were running v2.64 you wont be able to upgrade by simply installing over the old version.

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Scott Kelly
Project Manager