I don't do coding that much, but i think your problem is that KH used C_scripting(the A6 script) when you should be using Lite_C(the A7 script)... heres a little tip too, since you are a beginner try to start small. Make a small level first and see how that goes, if that works go to something bigger. Also try programing, level design, modeling and animating, and skinning to see which one is right for you. Once you found that work on that one "job" until you get really good at that, once you are that point (it will take a while, took me about 2 years to get decent at modeling, but everybody is different)look for a team and work at the job you are good at.
Hope this helps,
Doof Guy