Hey there, - sounds like you're having some diffficult problems that i don't even have answers on .. But, i might give you some advice? Or well, maybe some stuff that could soulve the problem.
The same happened for me last year - Fh just wouldn't work, no matter if i re-installed it or anything - i didn't know how to download maps, objects, textures etc. So i couldn't had been that.
To the end, i got so stressed that i went to my uncle (Whos job is to fix computer) And asked him. He said i had downloaded some short of program, which was causing my computer trouble working. Once he had cleaned my computer, Feral heart worked without any problem.
So my question is: Did you download anything before that happened to your feralheart?