I installed Ubuntu updates yesterday. KOrganizer was working fine after reboot later in the day. But today I boot up and nothing is showing in my calendar, no ToDos, no Events.
I've gone to View and looked at both the ToDo and Events lists directly and nothing is showing.
I've searched C drive and can find some .calendar files for events, todo etc. but they have a time of early morning, when I did the updates and not the later time when I edited my Todo list. Also, when I open one it is showing nothing in there, just a header type text.

Any suggestions? I really rely on my calendar, there's things in there I need otherwise I'll have to start phoning people and trying to track down what appointments I had when.