[lazserus]

I would back track and make sure you didn't skip any steps. Once all the files are uploaded to your server be sure you've imported the products-webtemplates.xml. The instructions aren't exactly accurate, so unless you're completely familiar with vB and all the options, I can see how it would be easy to miss. You import that by going to Plugins & Products > Product Manager > Add/Import Product. If you don't import that file then you won't see any of the Webtemplates options in your Admin CP. If you don't see the Webtemplates option then that means you're attempting to upload the webtemplates_export.xml to the wrong place. If that's the case then you'd definitely get an error when importing.

Back track and follow the instructions, but replace the info "Login Admin CP/Product Manager/Add-Import Product/ -> Import the file named 'product-webtemplates.xml'" with the path I've provided above in bold. You won't be able to upload webtemplates_export.xml until you've imported products-webtemplates.xml, because you need to import the export.xml using the Webtemplates options.

Hope that helps. If that doesn't, then maybe you could elaborate more on your problem.