[Owncloud] Undefined index: description in connector_sabre.php on line 52

[Stefan Dorn]

hi,

i've installed owncloud2 and get the following error message when i try
to "reload remote calendars" in thunderbirds lightning:

PHP Notice:  Undefined index: description in
/var/www/owncloud/apps/calendar/lib/connector_sabre.php on line 52

the apache log says:

sd [12/Oct/2011:17:57:48 +0200] "PROPFIND
/owncloud/apps/calendar/caldav.php/calendars/sd/default/ HTTP/1.1" 207
938 "-" "Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.23)
Gecko/20110922 Lightning/1.0b2 Thunderbird/3.1.15"

i used this url to connect to the remote calendar:
https://myserver/owncloud/apps/calendar/caldav.php/calendars/sd/default
and it seems to be working (because i see my entries previously made
with the web interface)

any ideas?

regards
stefan