[rdiff-backup-users] Problem with python2

[David Roze]

Hi,

I got the following fatal error message trying to launch a backup on a server:
while it works on some other servers

password: *****
Traceback (most recent call last):
  File "/bin/rdiff-backup", line 21, in ?
    import rdiff_backup.Main
  File "/usr/lib/python2.2/site-packages/rdiff_backup/Main.py", line 16, in ?
    from connection import *
  File "/usr/lib/python2.2/site-packages/rdiff_backup/connection.py", line 
544, in ?
    from restore import *
  File "/usr/lib/python2.2/site-packages/rdiff_backup/restore.py", line 
383, in ?
    import Globals, Time, Rdiff, Hardlink, FilenameMapping, SetConnections
ValueError: bad marshal data
Fatal Error: Truncated header string (problem probably originated remotely)

Couldn't start up the remote connection by executing

    ssh -C ...

Remember that, under the default settings, rdiff-backup must be
installed in the PATH on the remote system.  See the man page for more
information.

Anyone already got this message?
Thanks