Fireworks CS3 freezes on opening after disk upgrade

Have had Fireworks CS3 installed on secondary HDD and it's worked great for the past few years on a Windows 7 machine.  It had previously been installed on my Windows XP box.  On the Windows 7 machine I ran out of space on my main SSD (C-drive) so replaced this with a larger one ghosting the OS etc over.  This worked perfectly for everything except Fireworks which isn't even installed on that drive.  If I reboot with the old SSD Fireworks runs fine.  There is no error message so it isn't apparent what the issue might be other than the blue rotating progress ring which suggests it's caught in some loop.  I was going to try reinstalling and then perhaps de-registering and re-registering but thought I'd ask for confirmation first.

Any ideas?