Duplicate entry for some users

[ferdl9999]

Hi,

i get this error for some users when they log in: http://pastebin.com/u9djTwB1

I use mysql and cache is disabled.

I run spigot build patch 1658.

There is only one entry in the mysql for the name "MaskGamers" and his uuid

[lifehome]

Duplicate to #65