hi to all. few days ago I took another N900 to have it as backup.
I reflashed and then installed all my software.
Las one was CSSU testing.
I've done a backup with backupmenu and then restored it to be sure all was going in the right way.
Then I installed CSSU thumb and... menu in bootmenu has became strange whan I select a voice the higlighted menu is a strange light blue and then when I choose backupmenu this is waht happens

(sorry for my bad english)

the esecution stopped with a red screen and "chrooting"