cant save my work

hi, i bought this plugin last week, and started to use it today but i cant save my work, every time i load my scene trees are gone :s
what can i do?
reinstalled, and checked licence and everything looks ok.
i´ve read on this forum that this problem goes with pirated copies, but mine its original, you can verify if you want
please help me i have a deadline tomorrow (wish for a smiley with a gun pointing at the head,

)