I am following Jason Lee's blog to develop custom workflow activities using Visual Studio 2013. I need to have one of the activities use another custom activity. After deploying the first custom activity, it shows up and works as expected in SPD. However, when I restart VS and create a new custom activity, my already deployed custom activity does not show in the toobox.
How can I load a custom activity into the Visual Studio toolbox? I am using SharePoint 2013.