Re: VS 2008 can't load file or assembly 'AjaxControlToolkit'

I love googling things for people! :)

This guy has ur exact same error and a proposed solution. (That same solution
fixes most bizarre inexplicable web project build errors)

http://ranafaisal.wordpress.com/2008/03/24/could-not-load-file-or-assembly-ajaxc
ontroltoolkit-or-one-of-its-dependencies-the-parameter-is-incorrect-exception-fr
om-hresult-0x80070057-e_invalidarg/

Everything was fine for about a week. Today my computer crashed during
development and since then I am getting the following message

Error 9 Could not load file or assembly 'AjaxControlToolkit,
Version=3.0.20229.20843, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e' or
one of its dependencies. The parameter is incorrect. (Exception from HRESULT:
0x80070057 (E_INVALIDARG))  


I refreshed the AjaxToolkit.dll in my project  bin file. Reset the toolbox and
added 'AjaxToolKit' again still when I add a new web form

<%@PageLanguage="C#"MasterPageFile="~/Main.master"AutoEve
ntWireup="true"CodeFile="TestMSNSearch.aspx.cs"Inherits=&quo
t;TestMSNSearch"Title="Untitled Page" %>

this line has a blue squiggle line under it and I can not compile project
anymore.

 Any ideas, newbie

Thank you for your reply. I am running VS 2008 with .Net 3.5 and I don't have a
Temporary ASP.Net file at this location
C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files nor any
other location on my computer. I delete all the newly created pages and the
project compiles but any new page I add to the project has the error described
in my first post. What to do, what to do??? Newbie

No Temporay ASP.Net files directory? It must be there somewhere. As far I know
you will have this folder regardless of the .net version you are using.

For me it's:

C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files

My web app is set to target v3.5. I can still see temporary files for my 3.5 app
being created in the 2.0 folder. Theres no other Temporary ASP.NET files
folder.

Try searching for Temporary ASP.Net Files and re-check your path. Is any part of
the directory tree there? Do you have a Microsoft.Net folder?

I've never seen a machine (running asp.net 2.0+) without a temporary asp.net
files folder... i'm pretty sure it's always there. Can someone else confirm
this?

I have Repaired/Reinstalled VS 2008. Uninstalled and reinstalle Ajax Extension
1.0. I looked for the Temporary ASP.Net folder again, it is not there, I
searched my harddrive nothing was found. The strange thing is I add a new web
form to my project and I get this error. I don't even have any Ajax controls on
the form. When I add some ajax controls it does not know about them. Read on the
forums but nothing worked for me so far. Short of uninstalling the whole machine
and reinstalling, I don't know what to make of it. My machine crashed in the
afternoon durning development, after that the error accourd. I am running Vista
Ultimate and VS 2008.

New Page

<%@PageLanguage="C#"MasterPageFile="~/Main.master"AutoEve
ntWireup="true"CodeFile="Default2.aspx.cs"Inherits="Def
ault2"Title="Untitled Page"
%><asp:ContentID="Content1"ContentPlaceHolderID="DefaultMas
terPageContentPlaceHolder"Runat="Server">

</asp:Content>

this is all the code that I have in the page. First line has blue squiggle line
under it. Here is the error message again - Warning 1
D:\_SYL_Project\Projects\ShareYourLoss\ShareYourLossWeb\Default2.aspx: ASP.NET
runtime error: Could not load file or assembly 'AjaxControlToolkit' or one of
its dependencies. The parameter is incorrect. (Exception from HRESULT:
0x80070057 (E_INVALIDARG))
D:\_SYL_Project\Projects\ShareYourLoss\ShareYourLossWeb\Default2.aspx 1 1
D:\...\ShareYourLossWeb\