I. \ It is often because the code has been written with ajaxcontroltoolkit. dll, which also references why there is a script error. Maybe this is the reason why you can add the following in Web. config:
<Assemblies>
<Add Assembly = "system. Design, version = 2.0.0.0, culture = neutral, publickeytoken = b03f5f7f11d50a3a"/>
<Add Assembly = "system. Web. Extensions. Design, version = 1.0.61025.0, culture = neutral, publickeytoken = 31bf3856ad364e35"/>
<Add Assembly = "system. Web. Extensions, version = 1.0.61025.0, culture = neutral, publickeytoken = 31bf3856ad364e35"/> </assemblies>
</Compilation>
<Httphandlers>
<Add verb = "Get, head" Path = "scriptresource. axd "type =" system. web. handlers. scriptresourcehandler, system. web. extensions, version = 1.0.61025.0, culture = neutral, publickeytoken = 31bf3856ad364e35 "Validate =" true "/>
</Httphandlers>
Ii. When aspajaxextsetup. MSI is installed, scriptmanager is used on the page! Sometimes the unknown service ASP: scriptmanager appears
In this case, you may add the following declaration code to your HTML code: OK
<% @ Register Assembly = "system. web. extensions, version = 1.0.61025.0, culture = neutral, publickeytoken = 31bf3856ad364e35 "namespace =" system. web. ui "tagprefix =" asp "%>