Oké you clicked something wrong why there is no event registered and the methode try to call on the event thats null and it threw, an exception, i wil update and reupload the Jar, gone catch the exception handle it. can you tell me what you just didt ingame to get a null pointer? do it always thow a stacktrace? are you using other plugins or mods that May conflict. How i see it this happens because it calls PlayerInteract and not PlayerEntityInteract i have a methode that drops the item and for Some reason it is never registerd the entity you clicked i wil set a null check in that event.

Great, Thankyou!

Yes i agree you can distrubte it, link for updates to this page. Notice its a plugin and not a clientside MOD so only available for bukkit or spigot Minecraft servers.