I'm only having success with this plugin about 50% of the time on my client's gift basket site. Either the thumbs will not display or I'll get this message:
Cannot generate shortcode for this configuration.
Cannot get product data.
Here's the code I'm using:
[ecwid_random_products number="8" per_row="4" show_title="true" show_price="true"]
It is on the same page as the store widget code, but below.