[Mailman-Users] Re-installed Mailman problems with old lists

[Dicso Geza]

I have just reinstalled my Mailman (on Debian with apt-get). It recognized
the old settings and it can display the old lists, members, etc.

But if I want to manage old lists with admin front-end by Apache-webserver,
it send erros messages:

When I am prompted to write admin password, the top screen:

"Error decoding authorization cookie."

When I type it and hit Enter, the message is:

admin: Traceback (innermost last):
admin:   File "/var/lib/mailman/scripts/driver", line 112, in run_main
admin:     main()
admin:   File "/usr/lib/mailman/Mailman/Cgi/admin.py", line 168, in main
admin:     FormatConfiguration(doc, lst, category, category_suffix)
admin:   File "/usr/lib/mailman/Mailman/Cgi/admin.py", line 306, in
FormatConfig
admin:     form.AddItem(FormatOptionsSection(category, lst))
admin:   File "/usr/lib/mailman/Mailman/Cgi/admin.py", line 361, in
FormatOption
admin:     AddOptionsTableItem(big_table, item, category, lst)
admin:   File "/usr/lib/mailman/Mailman/Cgi/admin.py", line 376, in
AddOptionsTa
admin:     val = GetItemGuiValue(lst, kind, varname, params)
admin:   File "/usr/lib/mailman/Mailman/Cgi/admin.py", line 463, in
GetItemGuiVa
admin:     return TextBox(varname, getattr(lst, varname), params)
admin: AttributeError: num_spawns
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Could anybody help this problem solving. I do not want to loose my old lists
(more then 1000 members)

Thanks
--
Dicso Geza