Aura H2O DB image is malformed

Greetings,

I have launched the "db check integrity.sh" from the KSM menu, and i got :
"Error: database disk image is malformed".

Do you know a way to cure my database ? (I have no backup)
Thanx in advance :)


Ps :
Each time I use Calibre to send books to my ereader, the database corrupts, and if i reconnect my device, Calibre tells me "Error communicating with device".
I first suspected my USB ports more than Calibre, but when i copy/past books i meet no problems... I am open to any suggestions :)

Edit : For my problem with Calibre, I will open a new thread ;)