I thought I would play around with Silverstripe as it seems to be a very nice CMS. I installed version 3.05 on my webserver using Softalicious. I changed the theme to bookshop, then added the bookshop ecommerce module by uploading it as a sub folder into the silverstripe folder. I looked at http://code.google.com/p/silverstripe-ecommerce/ and followed the steps:
1.Install SilverStripe to your web server, using their instructions.
2.Install the eCommerce module by adding the ecommerce folder to your silverstripe site's main directory.
3.Install the payment module by adding it's folder to your silverstripe site's main directory.
4.Visit http://yourwebsite/dev/build?flush=all to make sure the database is configured.
I did all of these steps. The site did not install the ecommerce parts onto the web page.
My test website is www.meadowbank.biz/stripe. The question Is there a test ecommerce theme? I suspect there are version problems. I figure that the theme is old and having read the development of the ecommerce modules history I suspect that it might be better to ask.