And what is it you want any of us to say?

Yes, it's possible that you lost the client_state.xml file and the client_state_prev.xml file because they may have been being written to at the moment the power went out.

But just from your post it's very difficult to diagnose anything. No logs, no check what's actually in the data directory, just one line of what BAM said at the time of the 'outage'. I'm not even sure you want anything diagnosed.

Can this happen again? Sure. Computers are finicky that way.

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