Hi everybody,

I tried to add a new class to my project. Now I'm getting these errors in some of my pages:

Error 102 The type 'System.Web.UI.ScriptManager' exists in both 'c:\WINDOWS\assembly\GAC_MSIL\System.Web.Extensions\3.5.0.0__31bf3856ad364e35\System.Web.Extensions.dll' and 'c:\WINDOWS\assembly\GAC_MSIL\System.Web.Extensions\1.0.61025.0__31bf3856ad364e35\System.Web.Extensions.dll' C:\Development\Visual Studio Projects\WebSites\FCAdmin\Coordinator\People\Registration.aspx 1 1 C:\...\FCAdmin\


private global::System.Web.UI.UpdatePanel @__BuildControlupdGrid() {
global::System.Web.UI.UpdatePanel @__ctrl;

I verified that my project has a correct reference (it was wrong, actually, so I removed and re-add the proper version).

What should I do to resolve the problem?

Thanks in advance.