Hi Fernandes,
I had the same issue in my N95, (the application didn't start up and the screen blinks once), I uninstalled the PlutoMO, then reboot the phone and I installed again, now It's works but you will need to do this, every time that the PlutoMO crashes.
I have some problems with the buttons but no problems with PlutoMO at the startup.
I hope it helps.
Thanks
Hernan