Bukkit

What steps will reproduce the problem?
1.  User used /da toggle to turn on discoarmour
2.  User was trying to break snow in protected area (creative mode in creative server)
3.  User gets kicked with "proxy lost connection to server"

What is the expected output? What do you see instead?
Player shouldn't be kicked, but is kicked.

What version of the product are you using?
Latest as of this ticket post.

Do you have an error log of what happened?
Yes,
http://pastebin.com/gxfWJcdH

Please provide any additional information below.
I am using this on my Creative server that is updated to 1.7.10 spigot. Version 1613.  This could be a lot more than this plugin, but there is an error in my console logs to link it back to this plugin.

Following the steps to get the error might not happen, but I hope the stacktrace is all you need.

I'm pretty sure that this plugin isn't causing the disconnect issues... But there is still the weird error in console that should be addressed.