Happened again yesterday 
So, I will change my way to work with this machine. From now, just 1 song / jam per project. I don’t want to lose my work again
It is maybe what people normally do, but it’s not what I have been doing. In my case, I was working ‘one song/jam per bank’ (so, 6 of them per project), but I have realized this is a memory killer (at least with the samples size I work)