2.1 After adding an export, or a client to an existing export, it doesn't work and I get the error message "Bad exports list line /foo". What is going on?

You can't have an export with a client that has a higher level export already exported to it (e.g. if client foo already has /Users/jerry exported to it, you cannot also export /Users/jerry/Pictures to it.)

There should be an error dialog to help diagnose this added real soon now.