Crashes on cron job

Binary package hint: rdiff-backup

I set up rdiff-backup to run on a cronjob, using this command:
/usr/bin/rdiff-backup --exclude-special-files /home/eric/all/ /home/eric/max/Backup/all/

I may have had an old backup that was failing and causing subsequent backups...

ProblemType: Crash
Architecture: i386
Date: Wed May 30 20:42:10 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/rdiff-backup
InterpreterPath: /usr/bin/python2.5
Package: rdiff-backup 1.1.5-3build1
PackageArchitecture: i386
ProcCmdline: /usr/bin/python /usr/bin/rdiff-backup --exclude-special-files /home/eric/all/ /home/eric/max/Backup/all
ProcCwd: /home/eric
ProcEnviron:
 PATH=/var/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/rdiff-backup', '--exclude-special-files', '/home/eric/all/', '/home/eric/max/Backup/all']
SourcePackage: rdiff-backup
Uname: Linux eric.local 2.6.20-15-generic #2 SMP Sun Apr 15 07:36:31 UTC 2007 i686 GNU/Linux