NuGet Package Manager Console Default Project dropdown is empty

In VS 2015, I just restarted the IDE and the dropdown was filled again.

Close the IDE and open again may help. It worked on my VS2015

I was able to manually specify the project by using the following:

add-migration "Locations" -StartupProjectName "ProjectA" -ProjectName "ProjectB"

The documentation for this command is sparse, so here's what I assume is happening:

1. -StartupProjectName specifies the project where the database configuration is stored (an MVC4 project in my case)
2. -ProjectName specifies the project where the migrations are to be scaffolded.

I had ProjectB set as the startup project in my app due to testing for this question, but I think you can omit -StartupProjectName if the correct project is set as a startup project in VS.