MCNP Why does it say F5 tally is not in any cell?

[llatosz]

Sorry for two questions in a row, this one we have been stumped on for the entire day
We're getting "fatal error. detector no. 1 of tally 5 is not in any cell.", What could be causing this?
In the manual and all examples we've seen, nobody has parameters specifying cell location for the tally.
It is a very simple problem, 3 concentric layered cylinders on the Z axis, with a point Cf-252 source in the center, and a ring detector 1cm outside the outer surface.
Below is our simple input file if needed

1- c MCNP TEST
2- c CELL CARDS
3- 1 1 -0.96 -100 -400 500 IMP:N=1.0 $ For radius 0-10 (under plane 400, above plane 500)
4- 2 2 -11.34 100 -200 -400 500 IMP:N=1.0 $ For radius 10-20
5- 3 1 -0.96 200 -300 -400 500 IMP:N=1.0 $ For radius 20-95
6- 4 0 600 IMP:N=0 $ Terminate outside of kill-sphere
7-
8- c SURFACE CARDS
9- 100 CZ 10
10- 200 CZ 20
11- 300 CZ 95
12- 400 PZ 500 $
13- 500 PZ -500 $Two planes to cut infinitely tall cylinders
14- 600 SO 700 $Kill sphere around entire problem
15-
16- c DATA CARDS
17- MODE N
18- TOTNU
19- NPS 10000
20- SDEF POS=0 0 0 CEL=1 PAR=1 ERG=D1
21- SP1 -3 1.18000 1.03419
22- c MATERIAL SPECIFICATION
23- M1 NLIB=60c $ pOLYETHEYLENE CH2
24- 1001 2.0 $ Hydrogen
25- 6000 1.0 $ Carbon
26- M2 NLIB=60c $ Lead
27- 82207 1.0
28- c TALLY SPECIFICATIONS
29- F5Z:N 0 96 0
30- E5 1 18
31- DF5 IU=1 IC=10 FAC=6.44e7
And a snip of the output file where the error is looks like this:
28- c TALLY SPECIFICATIONS
29- F5Z:N 0 96 0
30- E5 1 18
31- DF5 IU=1 IC=10 FAC=6.44e7

fatal error. detector no. 1 of tally 5 is not in any cell.

ring detector specifications
detector a0 r axis r0
1 0.00000E+00 9.60000E+01 z 0.00000E+00

 

[PSRB191921]

Hi,
I am agree with mcnp :-)
Your geometry is very strange at the position x=0 y=96 z=0 it is a no man's land : nothing "le néant"