I followed the instructions given by: http://ngspice.sourceforge.net/ngspice-eeschema.html#intro when I set it up. I'm using Windows 10, so I used the environment variable %USERPROFILE% to get where I was going. From there, I created first one file, then, when that did not work, the other.

Here's what I've got:
```
C:\>cd %USERPROFILE%
C:\Users\Dave>type .spiceinit
* user provided init file
set ngbehavior=ps
C:\Users\Dave>type spice.rc
* user provided init file
set ngbehavior=ps
C:\Users\Dave>
```

I don't think I've deviated from the instructions. I did restart KiCAD after creating each file. I still get `Error: no such function 'pwrs'`.

Here is my netlist for what does not work:

> .title KiCad schematic
> XU1 Out Net-_R2-Pad1_ Net-_R3-Pad1_ ECC83
> R4 V+ Out 100k
> R2 Net-_R2-Pad1_ Net-_C1-Pad1_ 1k
> R1 Net-_C1-Pad1_ GND 1Meg
> R5 Out GND 1Meg
> V2 In GND SIN(0 1 1k)
> V1 V+ GND DC 250 AC 0
> C1 Net-_C1-Pad1_ In 0.47u
> R3 Net-_R3-Pad1_ GND 1.5k
> .save @r4[i]
> .save @r2[i]
> .save @r1[i]
> .save @r5[i]
> .save @v2[i]
> .save @v1[i]
> .save @c1[i]
> .save @r3[i]
> .save V(In)
> .save V(Net-_C1-Pad1_)
> .save V(Net-_R2-Pad1_)
> .save V(Net-_R3-Pad1_)
> .save V(Out)
> .save V(V+)
> .SUBCKT ECC83 P G K 
> E1  2  0  VALUE={45+V(P,K)+95.43*V(G,K)} 
> R1  2  0  1.0K 
> Gp  P  K  VALUE={1.147E-6*(PWR(V(2),1.5)+PWRS(V(2),1.5))/2} 
> Cgk G  K  1.6P 
> Cgp G  P  1.7P 
> Cpk P  K  0.46P 
> .ENDS ECC83 
> .tran 1m 2m
> .end


Here is my netlist for what *does* work:

> .title KiCad schematic
> XU1 Out Net-_R2-Pad1_ Net-_R3-Pad1_ ECC83
> R4 V+ Out 100k
> R2 Net-_R2-Pad1_ Net-_C1-Pad1_ 1k
> R1 Net-_C1-Pad1_ GND 1Meg
> R5 Out GND 1Meg
> V2 In GND SIN(0 1 1k)
> V1 V+ GND DC 250 AC 0
> C1 Net-_C1-Pad1_ In 0.47u
> R3 Net-_R3-Pad1_ GND 1.5k
> .save @r4[i]
> .save @r2[i]
> .save @r1[i]
> .save @r5[i]
> .save @v2[i]
> .save @v1[i]
> .save @c1[i]
> .save @r3[i]
> .save V(In)
> .save V(Net-_C1-Pad1_)
> .save V(Net-_R2-Pad1_)
> .save V(Net-_R3-Pad1_)
> .save V(Out)
> .save V(V+)
> .SUBCKT ECC83 P G K 
> E1  2  0  VALUE={45+V(P,K)+95.43*V(G,K)} 
> R1  2  0  1.0K 
> Gp  P  K  VALUE={1.147E-6*(PWR(V(2),1.5)+SGN(V(2))*PWR(V(2),1.5))/2} 
> Cgk G  K  1.6P 
> Cgp G  P  1.7P 
> Cpk P  K  0.46P 
> .ENDS ECC83 
> .tran 1m 2m
> .end

The only change between the two netlists is me changing PWRS(V(2),1.5)) to SGN(V(2))*PWR(V(2),1.5))

Perhaps there is something else causing the problem? Is there any way to verify the init file is actually being read on startup? Is there a SPICE equivalent of a console.log()? Both init files have read-write permissions. I can't think of what else it might be.