Time passing has allowed the software to activiate the "sites" tab. I can now ue thee sites tab. You might want to notify others in the event that this anomoly occurs for others.
I believe that the problem with the custom domain loss is that the conversion of my Public Site did not automatically activate my custom domain. I have manually activated the sharepoint equivalent domain name on my existing public site and am waiting for the management system to accomplish the activation.
The SkyDrive tab goes to the same page as the sites tab. I imagine that this might change over time.
Al