This was probably more than just a 'hiccup'! It sounds like you experienced an out of space condition. Things like that can be VERY dangerous for your UBB. Please check with your webhost and ensure that they have adequate disk space and that you're below any file quotas.

If this happens again, you should probably read the recovery instructions...

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Charles Capps, Moderator, Post-Install Troubleshooting
PLEASE NOTE: Due to time limitations, I do not provide UBB support via email.