I get a bunch of errors when trying to do a backup (the same one spammed and after several minutes, I still cannot enter commands in the terminal, have to abort with Ctrl+C). It says:
I've checked the .csv file just in case the errors were not important, but it's 0 b in size.

Any idea? I'm trying to backup because my /home memory is probably beyond the 5% free space required, I can't send or receive mms anymore due to "insufficient space" (rough translation from the French).

In case it is relevant, I tried to backup using Nokia Suite too, but I get an error after several minutes of process and not any message is synchronized. I saw in the comments in Beta Labs that people have experienced the same issue, but no fix has been posted. I tried both Bluetooth and USB like others before me. Contact sync does work so it is likely not a simple connection problem. Noteworthy, when connected, Nokia Suite can show the messages currently in the N9, but it shows none after August 16th 2013, either in received on sent sms, which is nonsense because I have plenty of more recent messages when I browse my conversations directly on the N9.

Any help would be very welcome, it kind of sucks receiving mms that can't be opened.