Today I installed VS 2015 on Windows 7 x64. Mainly to test new .Net Core features and etc. And for test I created new C# \"Console Application (Package)\" solution and got t
Install the latest version by opening a console and running:
dnvm upgrade
If you reopen VS you should be able to compile.
If this doesn't work, try deleting the C:\Users\username\.dnx folder. Reopen VS and it will recreate the .dnx folder in the same location with only 2 scripts: bin\dnvm.cmd and bin\dnvm.ps1 Note: This would delete all already installed runtimes.
Rerun dnvm upgrade and check under the project properties if the Solution DNX SDK Version you have matches an installed one.