Bukkit

What steps will reproduce the problem?
1. Attempt to set your spawn point to a bed during the day
2.
3.

What is the expected output? What do you see instead?
Expect the spawn point to be set and properly passed to the plugin

Instead, the attached error occurs

What version of the product are you using?
Plugin version 7.4.0
Craftbukkit build 3084 (1.7.9)
Windows Server 2008R2
Java 7u55

Do you have an error log of what happened?
yes, attached

Please provide any additional information below.
Sometimes it seems to set the spawn and throw errors, other times it seems to not set the spawn. I'm not sure why the difference. This has not been a problem at night.