Failing to put ions in confinement

[kadupitiya]

Simulation is stuck at the preprocessing stage.
What works:
Positive ion valency: +1, +2
Salt concentration:0.3-0.5
Confinement length:3.0-4.0
Positive/Negative Ion diameter:0.5-0.75
Many combinations outside above combinations does work
Example :
Positive ion valency: +2
Salt concentration:0.6
Confinement length:3.0
Positive/Negative Ion diameter:0.75