Skill Tree Error

[raenarill01]

Hello everyone.
First post and all that.
So I have been working on my game, currently loaded scripts are:
KGC+Yanfly Demo http://www.rpgmakervx.net/index.php?&showtopic=19726
along with No Zombie Leaders! script by Modern Algebra
Level Up Heal Up script by RedYugi
Soma's map popup
Bresenham's bitmap
and the script i am having trouble with, Deity's Skill Tree script.
Specifically i have removed the JP system from the Demo along with the Battle Morale system.

The Problem: I create my skills, add the coordinates in etc, as seen in the first picture attachment. I learn the first two skills and enter battle. When I do, the error happens, as seen in the second attachment. One of the skills is selectable while the other isn't I have no idea what could have caused this. Any suggestions on how to fix it? 
PS: This happens on every character and just about every skills, 1/2 work.
Edit: Sorry for posting in wrong section, can it be moved? 

[Deity]

I just tested it with Ynfly's Demo and it works.
May I get your version? I'll can take a closer look.

Deity

[raenarill01]

Sorry for the late response, I have been ill  . But I did figure out the error, apparently the skills can only be used if they have the corresponding weapon ex: if the skill is slashing it can be used if you have a weapon that does slashing (such as a sword). Glad its solved though, I didn't want to not use the skill tree, its a very well made script. ^^