RC2 install broken

[Davem]

Software
XBian version: 1.0 RC2
XBMC version: 13.0
Overclock settings: xbian OC

Hardware
Power supply rating: 1A
RPi model (model A/B 256mb/512mb): B 512 mb
SD card size and make/type: transcend 16 GB class 10
Network (wireless or LAN): LAN
Connected devices (TV, USB, network storage, etc.): 3,5” USB HDD (external powered)

Logile
Link to logfile(s): dmesg http://pastebin.com/j83SPUmJ


Problem description:
I have broken my installation after the new update to Xbian RC2 with xbmc gotham 13 (stable branch). The update went ok and it worked for one evening. The next day xbian hangs on ‘starting xbmc’. I have tried two btrfs rollbacks (two days back, but after install of XBMC 13.0), but now my entire system is not booting anymore.


A new rollback seems not an option anymore:

Terminal

root@XBMC-PI:~# btrfs-auto-snapshot list root
Error: another copy is running ... 0
Error: another copy is running ... 1

It seems like a lot of information is gone from the SD install. My entire root looks like this:

Terminal

root@XBMC-PI:~# ls -la
total 32
drwx------ 1 root root 156 Apr 7 22:20 .
drwxr-xr-x 1 root root 190 Feb 17 22:09 ..
-rw------- 1 root root 11874 May 7 21:06 .bash_history
-rw-r--r-- 1 root root 570 Jan 31 2010 .bashrc
drwx------ 1 root root 4 Feb 15 23:55 .cache
drwx------ 1 root root 4 Feb 15 23:55 .config
-rw------- 1 root root 42 Jun 14 2013 .lesshst
-rw-r--r-- 1 root root 853 Apr 7 22:24 lircd.conf
drwx------ 1 root root 10 Feb 15 23:55 .local
-rw------- 1 root root 23 May 7 20:49 .nano_history
-rw-r--r-- 1 root root 140 Nov 19 2007 .profile

I am open for more ideas because I would like to prevent starting all over again?