Problems Opening earlier versions with revit 9

[Fcespedes]

Hi,

i Just have installed 3 Revit Building 9.0 licenses in my office and tried to open proyects made in version 7.0. When it opens appears the following message "The parameter in no wright" and do not allow me to move or save or do nothing. I can´t save as version 9 because he don´t allow me to do it, and if I can do it the worksets dissapeared form the workset menu and can´t even create new ones. Any one knows what happens with this? Its begining to be a hell the facto having the original software vs the cracked ones.

 

Thank you for youe help