Cubase 6.5 crashes on opening C4 projects

Hi all
I’ve just upgraded to Cubase 6.5 (64 bit in Windows 7)- all registered and working but: It freezes each time I try to open a Cubase 4 project. :cry: Is anyone having this problem? Should I be using the 32bit version?
Any suggestions welcome after this disappointing start. Auto-Tune VST isn’t recognised either but that’s a lesser problem for now…
thanks all, joe

This happens to me when I try to open a CuBase 5.5 project (32 bit on Windows XP). My CuBase 6.5 is running in 64 bit mode on Windows & which is also running 64 bit. It also fails on the 32 bit installation of 6.5 on Windows 7.