I have seen this same problem brought up by numerous people online, and have tried just about everything under the sun to resolve this issue but nothing is working. I copied my visual studio solution to another location on my computer, and now when I try to build it I get the infamous...
This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105.
Of course, I've enabled package restoration, tried restoring them manually (in which case I get a message saying "All packages are already installed and there is nothing to restore."), I've tried deleting all packages and then having the project restore them, I've read a lot about maybe the issue being the .csproj file, could that be it? If so, how do I access this file? Seems very rudimentary but for some reason I can't find it in my solution.