Since woocommerce released the 2.1 version with REST API feature, I tried to use it: I activated the API on my woocommerce admin panel but when I try to call the curl: http:
Try going, on the Admin Panel, to Settings -> Permalinks. On Default Settings radio group, select the "Post name" one. Save the changes.
Worked for me; hope for you too. :)
Source: this blog post.
EDIT: Website is not available, so I put its Wayback Machine URL.