Mails are not send by AnnouncerPlugin due to encoding error

[anonymous]

When doing any change which should start sending mails, no mails are delivered. Instead I get an error in the logs:

2011-08-11 17:08:04,491 Trac[main] DEBUG: Dispatching <Request "POST '/ticket/42'"> 2011-08-11 17:08:04,492 Trac[session] DEBUG: Retrieving session for ID u'testuser' 2011-08-11 17:08:04,493 Trac[main] DEBUG: Negotiated locale: None -> en_GB 2011-08-11 17:08:04,501 Trac[api] INFO: Synchronized repository in 0.01 seconds 2011-08-11 17:08:04,503 Trac[perm] DEBUG: No policy allowed testuser performing TICKET_ADMIN on None 2011-08-11 17:08:04,518 Trac[api] DEBUG: AnnouncementSystem found the following subscribers capable of handling 'ticket, changed': LegacyTicketSubscriber, TicketComponentSubscriber, TicketCustomFieldSubscriber, JoinableGroupSubscriber, UserChangeSubscriber, WatchSubscriber 2011-08-11 17:08:04,518 Trac[ticket_compat] DEBUG: LegacyTicketSubscriber added 'admin (authenticated)' because of rule: always_notify_component_owner 2011-08-11 17:08:04,519 Trac[ticket_compat] DEBUG: LegacyTicketSubscriber added 'testuser (authenticated)' because of rule: always_notify_owner 2011-08-11 17:08:04,519 Trac[ticket_compat] DEBUG: LegacyTicketSubscriber added 'testuser (authenticated)' because of rule: always_notify_reporter 2011-08-11 17:08:04,519 Trac[ticket_compat] DEBUG: LegacyTicketSubscriber added 'testuser (authenticated)' because of rule: always_notify_updater 2011-08-11 17:08:04,521 Trac[ticket_components] DEBUG: TicketComponentSubscriber added 'testuser (True)' for component 'Testcomponent' 2011-08-11 17:08:04,521 Trac[ticket_components] DEBUG: TicketComponentSubscriber added 'tester2 (True)' for component 'Testcomponent' 2011-08-11 17:08:04,523 Trac[api] DEBUG: AnnouncementSystem has found the following subscriptions: [tester2(authenticated) via email], [testuser(authenticated) via email], [admin(authenticated) via email] 2011-08-11 17:08:04,523 Trac[email_distributor] DEBUG: EmailDistributor has found the following formats capable of handling 'email' of 'ticket': text/html, text/plain 2011-08-11 17:08:04,524 Trac[email_distributor] DEBUG: EmailDistributor found the address 'tester@…' for 'admin (authenticated)' via: SessionEmailResolver 2011-08-11 17:08:04,524 Trac[email_distributor] DEBUG: EmailDistributor determined the preferred format for 'tester2 (authenticated)' is: text/html 2011-08-11 17:08:04,524 Trac[email_distributor] DEBUG: EmailDistributor found the address 'tester2@…' for 'tester2 (authenticated)' via: SpecifiedEmailResolver 2011-08-11 17:08:04,524 Trac[email_distributor] DEBUG: EmailDistributor determined the preferred format for 'testuser (authenticated)' is: text/html 2011-08-11 17:08:04,525 Trac[email_distributor] DEBUG: EmailDistributor found the address 'testuser@…' for 'testuser (authenticated)' via: SessionEmailResolver 2011-08-11 17:08:04,525 Trac[email_distributor] DEBUG: EmailDistributor is sending event as 'text/html' to: tester@…, tester2@… 2011-08-11 17:08:04,561 Trac[api] ERROR: AnnouncementSystem failed. Traceback (most recent call last):

File "/home/altrac/lib/python2.6/site-packages/TracAnnouncer-0.11.1_r10458-py2.6.egg/announcerplugin/api.py", line 369, in _real_send

distributor.distribute(transport, packages[transport], evt)

File "/home/altrac/lib/python2.6/site-packages/TracAnnouncer-0.11.1_r10458-py2.6.egg/announcerplugin/distributors/email_distributor.py", line 238, in distribute

self._do_send(transport, event, k, v, fmtdict[k])

File "/home/altrac/lib/python2.6/site-packages/TracAnnouncer-0.11.1_r10458-py2.6.egg/announcerplugin/distributors/email_distributor.py", line 325, in _do_send

rootMessage.set_charset(self._charset)

File "/usr/lib/python2.6/email/message.py", line 266, in set_charset

cte(self)

File "/usr/lib/python2.6/email/encoders.py", line 73, in encode_7or8bit

orig.encode('ascii')

AttributeError: 'list' object has no attribute 'encode'