Problem leveling up 7th/8th skill

[RoThe 14]

I implemented a 7th and 8th skill for every class.

Everything works apart from the leveling of the skill..

I click on the plus in the skill menu to level up the skill. My available skill points are reduced by 1, only the level number on the skill does not increase.
It's only visible after i relog or go to character selection. Also once i clicked on the plus i can't level it up again until i relog although the plus is still there.

When I level up a skill from the first six skills it gets leveled up normally as it should, but the 7th and 8th skill icons disappear. Only visible again after relog/char select..

Has anyone experienced that error or has some ideas to fix it? 

Thank you,
RoThe