I tried to add the actual Ajax Control Toolkit to an .Net 4.5.1 WebSite. All the dependencies seem to be properly installed but the AjaxControlToolkit.dll file is not there.
I tried to uninstall and reinstall the package with the NuGet Console in Visual Studio 2013 and it always looks to be successful, but also always that dll is missing. Also restarting VS did not help.
In the packages.config the entry for the dll with version 8.0.0.0 is there and also in the packages directory there a directory AjaxControlToolkit.8.0.0.0. but only the AjaxControlToolkit.8.0.0.0.nupkg and the readme.txt files are there.
Any idea, what went wrong or what I could do?
Start a command prompt and run dir c:\ajaxcontroltoolkit.dll /s to see if the file is somewhere on your system. If it is, then copy it to the project's bin folder.
If it's not on your hard drive, go to http://ajaxcontroltoolkit.codeplex.com/releases/view/116091, download the version in question, and copy the .dll from the package to the project's bin folder.
In the back of my mind it seems that I ran into this a couple of weeks ago, also, so there may be a bug in NuGet.