Just installed this module after upgrading from 4.7 to 6.20. I uploaded the module, enabled it, and ran update.php, all went without error. I enabled the Smiley filter on Filtered HTML input format. Also enabled smileys on the relevant node types in the Smiley config. When I go to a new comment, I see the Smileys area, but none of the icons are appearing, and they don't appear in the comment when entering the text equivalent.

The installation docs don't mention anything special needing to be done, so, what might I be missing?

Thanks!