I've been using YARPP previously (v2.1.4 I think) and it has worked fine. Today I just upgraded to v3.0.4 and YARPP keeps saying No Related Posts for all my posts/pages.
I've zapped out the yarpp tables, the YARPP options in wp_options table, deleted the plugin files, and reinstalled everything from scratch. But still No Related Posts. I've lowered the threshold to 0.1, rebuilt the related posts cache, and set Compute related posts on the fly, etc. Still no go.
I downgraded back to 2.1.4. The related posts are showing again.
Any other suggestion as to what I can do to get v3.0.4 to work?