FAIL TO INSTALL

Hi, i had remove my cubase 6 installation, and keep my cubase 5, but now i have this pop up when i start my cubase:
Licence error. No valid license for: Speaker impulse Responses…
How can i do to solve this?

Thanks

IMAC 27" I7

Just restore with your previously saved system backup and all will be as it was.

Had the same after installing an deinstalling a C5 full trial next to CS5.5. The speaker impulses belong to the Reverence plugin, which is not in CS. Maybe some files left related to REVenerce should be removed. Or just ignore the pop up?