Version 2.8-beta4
Bukkit 1.4.7R1.0

These errors happened first but I was not at the console. I do not know what caused them. I added a bunch of lorename checks to my drops last night and I would assume one of them has to be the culprit. However doing /od reload does not give any errors so at least I know syntax is correct.
http://pastebin.com/ED9uhzhW

This error I can confirm happened while shooting a bow. I do not have any lorename checks for bows yet, but I have a Longshot effect if shooting from over 30 blocks. It usually works no problem, and in this case I'm not sure how far away I was when shooting.
http://pastebin.com/KdgmziMh

My otherdrops-drops.yml: http://pastebin.com/jiv33SXJ

Issue fixed locally, should be in next build (beta 5).

Fixed in beta5.

Sorry was going to test and close this morning but updated a few other plugins and they were giving me issues. Definitely fixed 👍 Thanks!