Fixing AI after the last update

[Rei Ayanami 18]

I am totally lost.. overall... (How do you name all the files? Not sure I'm understanding this... help please)
I log on my Alchemist, which the Homunc is already summoned...
I get the following two AI.lua errors:
"cannot open ./AI_sakray/AI.lua: No such file of directory"
&
"attempt to call a nil vale"