download Full Mail

hi,

in the inbox, when downloading an e-mail world, sometimes there are errors that occur:
   * Can not concatenate 'str' and 'NoneType' objects, the following message appears:
              Environment Information :
              System : Windows-XP-5.1.2600-SP3
              OS Name : nt
              Operating System Release : XP
              Operating System Version : 5.1.2600
              Operating System Architecture : 32bit
              Operating System Locale : fr_FR.cp1252
              Python Version : 2.5.2
              OpenERP-Client Version : 5.0.6
              Last revision No. & ID :Bazaar Package not Found !Traceback (most recent call last):
              File "netsvc.pyo", line 244, in dispatch
              File "netsvc.pyo", line 73, in __call__
              File "service\web_services.pyo", line 583, in execute
              File "osv\osv.pyo", line 59, in wrapper
              File "osv\osv.pyo", line 118, in execute
              File "osv\osv.pyo", line 110, in execute_cr
              File "C:\Program Files\OpenERP AllInOne\Server\addons\poweremail\poweremail_mailbox.py", line 119, in complete_mail
              File "C:\Program Files\OpenERP AllInOne\Server\addons\poweremail\poweremail_core.py", line 624, in get_fullmail
              File "C:\Program Files\OpenERP AllInOne\Server\addons\poweremail\poweremail_core.py", line 455, in complete_mail
              File "C:\Program Files\OpenERP AllInOne\Server\addons\poweremail\poweremail_core.py", line 470, in save_attachments
             TypeError: cannot concatenate 'str' and 'NoneType' objects

       * Problem with the memory
             Environment Information :
             System : Windows-XP-5.1.2600-SP3
             OS Name : nt
             Operating System Release : XP
             Operating System Version : 5.1.2600
             Operating System Architecture : 32bit
             Operating System Locale : fr_FR.cp1252
             Python Version : 2.5.2
             OpenERP-Client Version : 5.0.6
              Last revision No. & ID :Bazaar Package not Found !Traceback (most recent call last):
             File "netsvc.pyo", line 244, in dispatch
             File "netsvc.pyo", line 73, in __call__
             File "service\web_services.pyo", line 583, in execute
             File "osv\osv.pyo", line 59, in wrapper
             File "osv\osv.pyo", line 118, in execute
             File "osv\osv.pyo", line 110, in execute_cr
             File "C:\Program Files\OpenERP AllInOne\Server\addons\poweremail\poweremail_mailbox.py", line 119, in complete_mail
            File "C:\Program Files\OpenERP AllInOne\Server\addons\poweremail\poweremail_core.py", line 616, in get_fullmail
            File "C:\Program Files\OpenERP AllInOne\Server\library.zip\imaplib.py", line 437, in fetch
            File "C:\Program Files\OpenERP AllInOne\Server\library.zip\imaplib.py", line 1055, in _simple_command
            File "C:\Program Files\OpenERP AllInOne\Server\library.zip\imaplib.py", line 885, in _command_complete
            File "C:\Program Files\OpenERP AllInOne\Server\library.zip\imaplib.py", line 986, in _get_tagged_response
            File "C:\Program Files\OpenERP AllInOne\Server\library.zip\imaplib.py", line 948, in _get_response
            File "C:\Program Files\OpenERP AllInOne\Server\library.zip\imaplib.py", line 1150, in read
            MemoryError

      * Display problem with accented characters, here is an example of mail downloaded:
           Je l'ai d=E9ja envoy=E9 un e-mail et j'attends encore sa r=E9ponse.
           D=E9sol=E9 pour le d=E9lai mis pour r=E9pondre =E0 vos mails, je suis trop= pris par la charge de travail que j'ai
        (=E9 is é ; =E0 is à)

Thanks