How to stop OpenOffice.org trying to recover files when starting?

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Every time I start OOo I get a list of some files that it tries to recover. These files are no longer on my computer. How can I stop OOo from trying to recover files that no longer exist?

The File Recovery window that starts at the beginning of your session has a Cancel button. Click Cancel. When asked if you really want to cancel the recovery attempt, affirm.