If you are using 4 then I'm assuming you are outputting the .cir from eeschema and then running it with ngspice and getting an error? If so, does it provide more details on what it doesn't like in the file?
I've just started playing with the nightly builds which integrate the two. One problem I found is that Kicad version 4 doesn't check for a lot of stuff. For one, if you use a battery it won't recognize it as such because it begins with "b" and not "v". Personally I'm just in the beginning of relearning what little I knew about spice some 20 years ago so I'll be of limited help, but if you post the .cir file here perhaps you can get more help. I know @mifi has been working with this.