Well...
Thank you very much for such a detailed answer. I am at work now so i'll have to wait later to do what you say.
(sorry for my broken english...
)
I will try to solve my problems with PO since i saw it working on a friend's computer and loved it. So I'm willing to give it a try.
I am really disapointed though, that no moderator and no developer could help us, since the bug is happening at the very moment of leaving the app. Someone give them a good video of what happen. PO developpers should know exactly what the program does at that moment. They could at least tell us what it is, so we could narrow our researchs.. But instead, they didnt even answer.
A great thank 7earplug, i might never use PO, but with your answer, i will have learned a lot, which is always usefull !!