Main Demo

Can someone please help install the main demo theme. I have been trying for 2 weeks to get this installed to my iPage site and now have purchased this highend WP theme 2 times.
I have followed the directions listed below but keep getting this error (This does not appear to be a WXR file, missing/invalid WXR version number):
1. From your dashboard click on Tools -> Import -> WordPress
and install WordPress Importer.
2. Click on Activate plugin & run importer.
3. Click browse and navigate to highend.xml.gz file from Demo Content folder (previously downloaded from mojo).
4. Click “Upload file and import”.
5. Check “Download and import file attachments”.
6. Click Submit.
7. Wait for “All done have Fun!” message.
If you don’t get this message go to Appearance -> Menus delete all the menus and start over again until you get the “All done have Fun!” message.