Question : That damn assembly again! ('System.Web.Extensions.Design, Version=1.0.61025.0)

Hey Comrades,

So I've been given a task to make some mods to an existing website.  I download the website on my local machine to work on and try running it and get the damn assembly error.

Could not load file or assembly 'System.Web.Extensions.Design, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

On my machine I have the 3.5 framework and the dll I have is version 3.5.xxx.xxx

Now of course it cannot find that assembly so I downloaded the DLL from the webserver and confirmed its the 1.0.61025.0 version.  I add the assembly as a reference and it still cannot find the file.

Perhaps I am not educated enough in assembly files but what do I need to do to get this running again?

*note  I tried updating the webconfig file with the Web.Extensions new version but I the AjaxControl.DLL craps out because it seems to be looking for the old version of the dll as well.

Please assist.

Answer : That damn assembly again! ('System.Web.Extensions.Design, Version=1.0.61025.0)

They should have already been there but since you opened the solution when those dlls didn't exist in your PC (since you didn't have the older Ajax version installed) the solution may be unable to find them. If they were already there under the references I would remove them, close the solution, re-open the solution and re-add them.