Question [Q] Sorry! The application stopped unexpected. + pb wiping factory and cache a

Hello everyone,
after a long time on forums and posts, and beginning to be worry for my S2, i finally decided to open my thread.
I have a Samsung SII since 2011 (already 3 years). It is exactly a GT-I9100P.

when i'm starting it I have a circle of messages like:
" Sorry! the application Samsung Home (process com.sec.android.app.twlauncher) has stopped unexpectedly. Please try again
Force close"

I tap on Force close and it writes:

" Sorry! the application LogsProvider (process com.sec.android.provider.logsprovider) has stopped unexpectedly. Please try again
Force close"

I tap on Force close and it writes:

" Sorry! the application Google Services Framework (process com.google.process.gapps) has stopped unexpectedly. Please try again
Force close"

I tap on Force close and it writes the same message with each of my application that should start when my S2 starts.
Then there are always the 2 messges in circle with the application Samsung Home and the application LogsProvider.

As said in many posts, I succeeded in doing Power off, took the sim out and restarted in recovery mode (with hold Volume Up and Power at the same time) and it wrote:

-- Copying media files...
Successfully copied media files.

#MANUAL MODE #

-- Updating application...
E:install_application_for_customer:Can't unmount/preload
copy application failed.

-- Applying Multi-CSC...
Installing Multi-CSC

Can't access to '/system/csc/FTM/system/'.
Successfully applied multi-CSC.


I did "Wipe data/factory reset" and it wrote:

-- Wiping data...
Formating/data...
Formatting /cache...
Data wipe complete.
E: failed to mount /efs (Invalid argument)
E: failed to mount /cache (Invalid argument)
E: can't mount /cache /recovery /log
E: can't open /cache /recovery /log
E: failed to mount /efs (Invalid argument)
E: failed to mount /cache (Invalid argument)
E: can't mount /cache /recovery /last_log
E: can't open /cache /recovery /last_log
E: failed to mount /efs (Invalid argument)
E: failed to mount /cache (Invalid argument)


I did "wipe cache partition" and it wrote:

-- Wiping cache...
Formatting /cache...
Cash wipe complete.
E: failed to mount /efs (Invalid argument)
E: failed to mount /cache (Invalid argument)
E: can't mount /cache /recovery /log
E: can't open /cache /recovery /log
E: failed to mount /efs (Invalid argument)
E: failed to mount /cache (Invalid argument)
E: can't mount /cache /recovery /last_log
E: can't open /cache /recovery /last_log
E: failed to mount /efs (Invalid argument)
E: failed to mount /cache (Invalid argument)


Apparently, my problem is not that simple and I now need to do something with Odin. There are so many different things I could do that I am a little lost. What procedure to do?

I saw this post well explained with many problems we can meet: http://forum.xda-developers.com/show....php?t=1841250 but i don't think there is mine...

Do i need to flash the ROM? (all explained in this nice post of ICS SGS TEAM ROM? : http://forum.xda-developers.com/show....php?t=1494493 )

thanks a lot for your help and i hope see you very soon!
Max