Skills Error Log?

Hello, I am trying to make some skills, but when i reload my MythicMobs, It creates an error log in the ErrorLogs folder. Can someone please help me? This is an awesome plugin but I can't use it with this error.

java.lang.NullPointerException
at net.elseland.xikage.MythicMobs.Skills.Mechanics.MessageSkill.<init>(MessageSkill.java:28)
at net.elseland.xikage.MythicMobs.Skills.Skill.getSkillMechanic(Skill.java:384)
at...

Skills Error Log?