Hi,
I had some problems too. Darrell pointed me this section in the How-To:
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/usr/local/rav8/bin/ravscan.sh = this is a hard drive scanner for the server. It is executable from the command-line only and does not work in any cron event at this time (bug-fix coming).
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and advised me to remove the ravscan.sh from the cron.daily.
Hope it helps,
guestHH