RPG Maker Forums

I'm working with RPG Maker VX Ace and  so far I got it working for the most part but when i try to go to the GF character to set skills for learning I get an error stating

Crystal Engine - GF Menu line 222: NoMethodError occurred.

undefined method 'has_key?' for nil:NilClass.

Here are lines 221-223 of the script.

221 def include?(item)
222   @actor.learning_skills.has_key?(item.id)
223 end

Then the next issue is when i finish a fight I get another error

Crystal Engine - GF Junction line 157: NoMethodError occurred. Undefined method "[]" for nil:Class.

Here are the lines for that statement

153 class <<self; alias gain_exp_ce_junction gain_exp; end
154  def self.gain_exp
155    $game_party.guardian_forces.each do |actor|
156      actor.gain_ap($game_troop.ap_total)
157      if actor.learning_skills[actor.learning_skill][0] == actor.learning_skills[actor.learning_skill][1]
158        text = sprintf(Vocab:btainSkill, $data_skills[actor.learning_skill].name)
159        $game_message.add('\.' + text)
160      end

Also I'm creating a class and gender system using events and a map. When I say yes to the class I want I get another error: Crystal Engine - GF Junction line 225: typeError occurred. Nil can't be coerced into Fixnum.

Here are the lines of this statement:

223 alias change_exp_gf_junction change_exp
224   def change_exp(exp, show)
225     value = exp - self.exp
226     @junctioned_actors.each do |actor|
227      actor.change_exp(actor.exp + (value / @junctioned_actors.size), show)
228    end

Now if I change line 225 to value = self.exp I fix the error above but then when I walk for a bit I get this error:

Crystal Engine - GF Junction line 285: NoMethodError occurred. undefined method "[]" for nil:NilClass.

Here are the lines of that statement:

279  alias refresh_ce_gf_juntion refresh
280   def refresh
281     refresh_ce_gf_juntion
282     return if @junction_skills.nil?
283     return if @junction_skills.empty?
284     return if @learning_skill == 0
285     if @junction_skills[@learning_skill][0] == @junction_skills[@learning_skill][1]
286      skills = @junction_skills.keys
287       index = skills.index(@learning_skill)
288       @learning_skill = skills[index + 1]
289       if @learning_skill.nil?
290         @junction_skills.each do |key, ap|
291           unless ap[0] == ap[1]
292             @learning_skill = key
293             return
294           end
295         end
296       end

Can someone please help me I need to get these working before I feel I can move on to continue the game I'm creating. Sorry for creating such a wall of text.