Evolution problems: Lost all tasks and Calendar events, can't make new ones.

[RJG]

As the title suggests, I've just lost all the tasks and calendar events I had set up in Evolution. I could replace them easy enough (only had a few) but it won't even let me do that. I can open the window to create a new task or event, but when I click save the window closes and nothing happens.

Sorry if this question has been asked before but I did search and all I found were some bug reports that were closed for lack on information.

[RJG]

I've since restarted and Evolution has found all my tasks and calendar events have returned. No idea what happened but there it is.