I have spent three days downloading the demo. It has been tedious progress.
Then when I try to unzip it, I get an error message that one of the files in the demo is corrupt:mad: !! And I just simply don't believe it:mad: !!! All that tedious work to nothing!!

But is there anyone out there that can help with my problem
Any help I would be very greatful for!!

I had the same problem, but after I restarted my PC it worked...
Are you sure that you have selected all files?..