Thanks for your reply.
No, I don't have the GitHub Extension for Visual Studio installed, however I would be able to install it if necessary.
I have only "synced" my solution once, which uploaded the whole lot to a new GitHub repository I created for the purpose. I have been unable to work out how to successfully undertake any further actions.
In fact I didn't "sync" this solution directly. I actually had to create a new solution with a different structure and copies of all the projects, and sync the restructured solution. I had to do this because GitHub forced me to have everything in my solution come off a top level folder.
I used the "sync" button in Team Explorer as per the screenshot below.
Many thanks
Geoff Olding
