I get back to the PC after a lovely weekend away (extraneous detail) and Start Screen (in SPLAT's very latest iteration) has depopulated the list of recently opened projects as well as pinned projects, leaving only 5 projects present and one pinned project, when previously there were at least 8 pinned. What gives? 

And thinking about it on reflection I know why: before I went away I reorganised a load of project files which would have broken the shortcuts Start Screen sets up. Obvious when I think about it.