we've got the same issue when updating MOQ from 4.1.1308.2321 to 4.1.1309.919, restore packages doesn't work. But it only fails on some computers, on mine it works. We are using nuget version 2.7.40808.167
Overall still a superb tool of course, so i'm giving it the 5 stars it clearly deserves.
I have NuGet integrated on my TFS build workflow, and as soon as I updated to latest version, "nuget install packages.config" breaks. Our team tried to track down the problem, and it looks like it has something to do with bigger version numbers or something.
You guys can try it for yourselves anytime, just go to the command-line and use: Install-Package Moq -Version 4.1.1309.0919 "Unable to find version '4.1.1309.0919' of package 'Moq'."
On 2.6 it works properly. Also, being unable to find the current version of the package gets me an effin slowdown on visual studio itself (it can even freeze at some time).
This makes using various frameworks and program toolboxes easy and pain free. I don't have to keep a library of such things on my desktop. I can simply do a NuGet search and add the tools as needed for my programming task.