Can´t increase skills

[Shizurake 0]

Hello everyone, please could anyone help me how to increase skills? I was "playing" with some files because I was increasing max character level to 1000 and getting more attribute points, but now I can´t use skills. When i click the + sign on any spell maybe 17-20 times, I can´t "add" it anymore, but the skill still doesn´t show any number of it´s level, and I can´t use that skill. What did I mess up? Please tell me how to repair my skills  Thanks