OK.
Just see what happened. Already happened to me, maybe my fault, I don’t know and am not sure at all.
The whole serie of 600 + images was selected when doing local adjustment. Everything was running smoothly (there was no noticeable slowdown in my station, so I didn’t notice it) but it was rapidly ending in a crash all the time.
Anyway, PL should not have crashed.
EDIT :
And I don’t understand how those images would stay selected after a crash and provide new crashes everytime I opened PL again. See : Is this possible or not?