VST Transit lockup

Still no joy with Cubase.
I have tried to download the file 4 times now and each time I have the same problem.
The last time I downloaded Cubase, when I unzipped the file winzip gave me the error message:-

CRC check failed for
“C\Users\Steve\Downloads\Cubase8.5\Winzip\Cubase8.5Cubase for Windows\Additional Content\VST S…\FCP_SMT_085_HSSE_SR_OneSoundSilver.vstsound
–expected 483D89E6, actual D783EE7.

This is the same file that gives problems each time I unzip it.
I copied the file from one of the other times I downloaded it and installed the program seemingly without a problem, but when I try to open the program it crashes at the point when vst transit is initialising.
If I uninstall vst transit, the program opens but if I try to add padshop or retrologue cubase crashes immediately.
There are no registry entries that are connected to any Steinberg programs.

I am beginning to wonder if I should have stuck with Cubase 5?
:frowning: