[PROBLEM] Error everytime i try to upgrade Python

[Exnor]

I'm Running Beta 1.1
on terminal i get this error everytime i try to upgrade Python

"
root@xbian2:/# sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
python python-minimal tzdata
3 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
5 not fully installed or removed.
Need to get 0 B/748 kB of archives.
After this operation, 1,024 B disk space will be freed.
Do you want to continue [Y/n]? y
Preconfiguring packages ...
Setting up initscripts (2.88dsf-41+deb7u1) ...
insserv: Service checkfs has to be enabled to start service mountall
insserv: exiting now!
update-rc.d: error: insserv rejected the script header
dpkg: error processing initscripts (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
initscripts
E: Sub-process /usr/bin/dpkg returned an error code (1)
"

Any ideas guys?

Thks to all