Since the upgrade to 5.5.4 and bukkit 1060 the ps info (and right-click with tool) show a blank info template, name field type location etc all missing. Please let me know if additional information is required. There are no errors in the logs.

cant replicate. right click info is working as it should on my end. are you testing on a clean config?

phaed,

I am seeing some weird output from this as well.

http://monstercraft.imgur.com/QWGD2 Here are some screens.

First is /ps
Second is /ps counts arthas5678
Third is /ps counts (no name given)
fourth is output clicking on a tool.

I see what you mean. I know exactly what the problem is, old chatblock objects are being reusing with old settings. It's a new bug introduced with the recent changes in 5.5.4. Thanks for reporting this.

Edit: fixed in 5.5.5