Everytime i install a theme on the n900 i get this error, does anyone know how to fix it?

Il post the log


Get:3 http://repository.maemo.org fremantle Release.gpg [489B]
Ign http://repository.maemo.org fremantle/free Translation-en_GB
Ign http://repository.maemo.org fremantle/non-free Translation-en_GB
Get:4 http://repository.maemo.org fremantle Release.gpg [489B]
Ign http://repository.maemo.org fremantle/free Translation-en_GB
Ign http://repository.maemo.org fremantle/non-free Translation-en_GB
Get:5 http://repository.maemo.org fremantle-1.3 Release [7956B]
Ign https://downloads.maemo.nokia.com ./ Translation-en_GB
Get:6 http://repository.maemo.org fremantle Release [7952B]
Get:7 http://repository.maemo.org fremantle Release [7958B]
Get:8 http://repository.maemo.org fremantle Release [7960B]
Hit https://downloads.maemo.nokia.com ./ Release.gpg
Ign http://repository.maemo.org fremantle-1.3/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle-1.3/non-free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/non-free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/free Packages/DiffIndex
Ign https://downloads.maemo.nokia.com ./ Translation-en_GB
Ign http://repository.maemo.org fremantle/non-free Packages/DiffIndex
Hit https://downloads.maemo.nokia.com ./ Release
Hit https://downloads.maemo.nokia.com ./ Release
Ign http://repository.maemo.org fremantle/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/non-free Packages/DiffIndex
Get:9 http://repository.maemo.org fremantle-1.3/free Packages [2352kB]
Ign https://downloads.maemo.nokia.com ./ Packages/DiffIndex
Ign https://downloads.maemo.nokia.com ./ Packages/DiffIndex
Hit https://downloads.maemo.nokia.com ./ Packages
Get:10 http://repository.maemo.org fremantle-1.3/non-free Packages [67.5kB]
Hit https://downloads.maemo.nokia.com ./ Packages
Get:11 http://repository.maemo.org fremantle/free Packages [2213kB]
Get:12 http://repository.maemo.org fremantle/non-free Packages [67.5kB]
Get:13 http://repository.maemo.org fremantle/free Packages [6912kB]
Get:14 http://repository.maemo.org fremantle/non-free Packages [214kB]
Get:15 http://repository.maemo.org fremantle/free Packages [3127kB]
Get:16 http://repository.maemo.org fremantle/non-free Packages [86.5kB]
Fetched 15.1MB in 3min10s (78.9kB/s)
Reading package lists...
--- 2011-02-09 03:36:31 ---
Start reading package lists
--- 2011-02-09 03:36:48 ---
Finished reading package lists
--- 2011-02-09 03:36:49 ---
Start fetching package dates
--- 2011-02-09 03:36:49 ---
need to fetch date for 18 packages
--- 2011-02-09 03:36:57 ---
sent 18 requests, received 18 replies with 0 errors
--- 2011-02-09 03:36:57 ---
Finished fetching package dates
--- 2011-02-09 03:39:17 ---
/usr/bin/apt-get -qsy --allow-unauthenticated -o Dir::Etc::sourcelist=/opt/fapman-cache/sources.list -o Dir::State::lists=/opt/fapman-cache/lists -o Dir::Etc::sourceparts="" --auto-remove install white-carbon-theme
--- 2011-02-09 03:39:22 ---
Output from last process:
---
Reading package lists...
Building dependency tree...
Reading state information...
The following NEW packages will be installed:
white-carbon-theme
0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
1 not fully installed or removed.
Inst white-carbon-theme (1.2.4 Extras-devel:2.0/fremantle)
Conf cloudy-blue-sky (1.6 Extras-devel:2.0/fremantle)
Conf white-carbon-theme (1.2.4 Extras-devel:2.0/fremantle)

--- 2011-02-09 03:39:25 ---
/usr/bin/apt-get -qy --allow-unauthenticated -o DPkg:ptions::=--force-confnew -o Dir::Etc::sourcelist=/opt/fapman-cache/sources.list -o Dir::State::lists=/opt/fapman-cache/lists -o Dir::Etc::sourceparts="" --auto-remove install white-carbon-theme
Reading package lists...
Building dependency tree...
Reading state information...
The following NEW packages will be installed:
white-carbon-theme
0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
1 not fully installed or removed.
Need to get 8683kB of archives.
After this operation, 11.7MB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
white-carbon-theme
Authentication warning overridden.
Get:1 http://repository.maemo.org fremantle/free white-carbon-theme 1.2.4 [8683kB]
Fetched 8683kB in 2min6s (68.5kB/s)
Selecting previously deselected package white-carbon-theme.
(Reading database ... 33408 files and directories currently installed.)
Unpacking white-carbon-theme (from .../white-carbon-theme_1.2.4_all.deb) ...
method return sender=:1.31 -> dest=:1.100 reply_serial=2
uint32 1
Setting up cloudy-blue-sky (1.6) ...
cp: cannot stat '/usr/share/themes/Blue-sky/transitions.custom': No such file or directory
dpkg: error processing cloudy-blue-sky (--configure):
subprocess post-installation script returned error exit status 1
Setting up white-carbon-theme (1.2.4) ...
WARNING: Failed to read '/usr/share/themes/white' directory!

Done!
method return sender=:1.31 -> dest=:1.102 reply_serial=2
uint32 2
Errors were encountered while processing:
cloudy-blue-sky
E: Sub-process /usr/bin/dpkg returned an error code (1)



Can someone help me fix it and also explain the reason why its done this so i have a better understanding of what the problem was

Thanks heaps!