Cubase IC Pro and Cubase 5.5.3


I know that cubase IC PRO only works with minimum config Cubase 6 BUT it worked with my MBP 10.7.5, v5.5.3 of cubase before…

I tried few days ago, updated the SKI and it doesn’t works anymore???

Is anybody know how to make it working again, or is it the end for me and that wonderful app?