[rdiff-backup-users] Invalid mode: rb?

[Kevin Horton]

Every time I use rdiff-backup to do a backup on one computer, two  
files are flagged with errors:

Exception 'invalid mode: rb' raised of class '<type  
'exceptions.IOError'>':
  File "/sw/lib/python2.5/site-packages/rdiff_backup/robust.py",  
line 32, in check_common_error
    try: return function(*args)
  File "/sw/lib/python2.5/site-packages/rdiff_backup/rpath.py", line  
1032, in open
    else: return open(self.path, mode)

ListError Library/Acrobat User Data/8.0_ppc/Synchronizer/Commands  
invalid mode: rb
Processing changed file Library
Incrementing mirror file /Volumes/Ext_BU/PowerBook2/kwh/Library
Processing changed file Library/Acrobat User Data
Incrementing mirror file /Volumes/Ext_BU/PowerBook2/kwh/Library/ 
Acrobat User Data
Processing changed file Library/Acrobat User Data/8.0_ppc
Incrementing mirror file /Volumes/Ext_BU/PowerBook2/kwh/Library/ 
Acrobat User Data/8.0_ppc
Processing changed file Library/Acrobat User Data/8.0_ppc/Synchronizer
Incrementing mirror file /Volumes/Ext_BU/PowerBook2/kwh/Library/ 
Acrobat User Data/8.0_ppc/Synchronizer
Processing changed file Library/Acrobat User Data/8.0_ppc/ 
Synchronizer/Commands
Incrementing mirror file /Volumes/Ext_BU/PowerBook2/kwh/Library/ 
Acrobat User Data/8.0_ppc/Synchronizer/Commands
Exception 'invalid mode: rb' raised of class '<type  
'exceptions.IOError'>':
  File "/sw/lib/python2.5/site-packages/rdiff_backup/robust.py",  
line 32, in check_common_error
    try: return function(*args)
  File "/sw/lib/python2.5/site-packages/rdiff_backup/rpath.py", line  
1032, in open
    else: return open(self.path, mode)

ListError Library/Acrobat User Data/8.0_ppc/Synchronizer/Notification  
invalid mode: rb
Processing changed file Library/Acrobat User Data/8.0_ppc/ 
Synchronizer/Notification

==================
I've looked at the permissions on these files - "ls -al" shows:

-rwxr-xr-x 1 kwh staff   0 Apr  3 18:38 Commands*
-rwxr-xr-x 1 kwh staff   0 Apr  3 18:38 Notification*

I don't see any obvious problem there.  Am I missing something?

I'm running rdiff-backup 1.1.11, on OS X 10.4.10.

Kevin Horton
Ottawa, Canada