Lighting Extension Fails to Display Data

[Ben]

As the attached screenshoot shows, thunderbird and/or the lighting extension is not able to display its calendar data. Most of the time it even fails to display the logos of the calendar and todo list tab. As you may guess, I need this feature to do my work. So I would be quite thankful for advice.

Am I the only one with this problem?

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: thunderbird 1:24.0+build1-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: benjamin 4983 F.... pulseaudio
BuildID: 20130917155107
Channel: Unavailable
Date: Fri Oct 25 11:15:07 2013
ForcedLayersAccel: False
IpRoute:
 default via 10.1.7.1 dev wlan0 proto static
 10.1.7.0/24 dev wlan0 proto kernel scope link src 10.1.7.20 metric 9
 192.168.25.0/24 dev vmnet1 proto kernel scope link src 192.168.25.1
 192.168.36.0/24 dev vmnet8 proto kernel scope link src 192.168.36.1
MarkForUpload: True
PrefErrors: 'utf-8' codec can't decode byte 0xe4 in position 4742: invalid continuation byte
PrefSources: [Profile]/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/defaults/preferences/lightning.js
Profiles: Profile0 (Default) - LastVersion=24.0/20130917155107 (In use)
RelatedPackageVersions:
 icedtea-7-plugin 1.4-3ubuntu2
 gnome-shell 3.8.4-0ubuntu5
 totem-mozilla 3.8.2-0ubuntu1
 rhythmbox-mozilla 2.99.1-0ubuntu1
RunningIncompatibleAddons: False
SourcePackage: thunderbird
UpgradeStatus: Upgraded to saucy on 2013-10-17 (7 days ago)
dmi.bios.date: 06/16/2011
dmi.bios.vendor: INSYDE
dmi.bios.version: R0170H5
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnINSYDE:bvrR0170H5:bd06/16/2011:svnSonyCorporation:pnVPCZ21C5E:pvrJ004MG71:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VPCZ21C5E
dmi.product.version: J004MG71
dmi.sys.vendor: Sony Corporation