Unibeast Installation failed

[roisol144]

i'm trying to install Yosemite installation with Unibeast new version and when i click on install after 5 seconds i get an error "There was an error creating your UniBeast drive:Couldn't mount Install ESD".
i don't know what to do i have no idea why i got that message ..

 

[mrbubbles]

Likely your OS X installer is damaged and you should re-download it.

 

[roisol144]

actually i just had to restart the system, now it in the middle of the installation ! hoping for good