cannot open cubasis project in cubase 7

Hey there ma people .

ive just bought and downloaded the cubasis for ipad app and am enjoying it and love the idea that i can create on the go.
But the problem is when i try to open a cubasis for i0s file in my CUBASE 7 i tells me " invalid file project"I have tried to address this issue by changing the extention file from .cbp (cubasis for ipad file) to .cpr . but still no joy

please help me as world domination awaits me

thank you comrades