[Patrick J]

Hi

Thank you for your response. I have been monitoring things since your post.

I did some trials where I either shut down the computer with OmniFocus running or without it running however in those trials the "Unable to Lock Document" dialogue did not show up. So I could not give good answers to your questions.

Now out of the blue the dialogue has shown up again. I was not at startup of the computer (OmniFocus is in the startup items) instead it just came up after the Mac has been running already for hours.

The date/time very likely from the shut down before the last one. It is a bit over a day ago and I think I shut the computer down yesterday at the time stated, then started it up later again.