Here is what BOINC messages say.... How do I avoid this the next time I reboot my computer?

--- - 2005-01-31 23:56:55 - Starting BOINC client version 4.13 for windows_intelx86
climateprediction.net - 2005-01-31 23:56:55 - Project prefs: no separate prefs for home; using your defaults
climateprediction.net - 2005-01-31 23:56:55 - Host ID is 97968
--- - 2005-01-31 23:56:56 - General prefs: from climateprediction.net (last modified 2005-01-31 19:29:52)
--- - 2005-01-31 23:56:56 - General prefs: no separate prefs for home; using your defaults
climateprediction.net - 2005-01-31 23:56:56 - ACTIVE_TASKS::restart_tasks(); missing files
climateprediction.net - 2005-01-31 23:56:56 - Unrecoverable error for result 42ot_000212015_0 (One or more missing files)
climateprediction.net - 2005-01-31 23:56:56 - ACTIVE_TASKS::restart_tasks(); missing files
climateprediction.net - 2005-01-31 23:56:56 - Unrecoverable error for result 42ov_000212018_0 (One or more missing files)

There are two precautions you might take.

One is to suspend BOINC before closing down. It may be that the CPDN app. had not closed properly, and that is a way of giving it time to do so.

The other is to backup the entire BOINC folder from time to time. Then if something like that happens you can at least go back to that rather than losing the whole thing.

I think what has happened is unusual, though, so if it does recur it might be worth exploring why. Having somebody close down your computer by means of the power button might be an example!

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> There are two precautions you might take.
>
> One is to suspend BOINC before closing down. It may be that the CPDN app. had
> not closed properly, and that is a way of giving it time to do so.

I tried suspending and restarting without a reboot, and it started back where I left off. When the problem happened I "exit"ed the client, thinking this sufficient. Since this happened later

climateprediction.net - 2005-02-01 01:01:27 - Started download of hadsm3um_4.04_windows_intelx86.zip
climateprediction.net - 2005-02-01 01:08:16 - Finished download of hadsm3um_4.04_windows_intelx86.zip

Maybe that file got corrupted -- I've no idea how.

> The other is to backup the entire BOINC folder from time to time. Then if
> something like that happens you can at least go back to that rather than
> losing the whole thing.

I'll do that next time I suspend to reboot.

> I think what has happened is unusual, though, so if it does recur it might be
> worth exploring why. Having somebody close down your computer by means of the
> power button might be an example!

Power failure and lost carrier are common here. I'm hoping it's tolerant of that. If not, I doubt I'll have a 3 month stretch without unrecoverable corruption. Backups do seem to be the ticket.

Thanks, Andrew. I hope it was indeed a fluke.