Hi,

I need to produce an initial population. I have taken a look at earlier posts 
on generating initial population and the example in the manual. I've tried 
using the Coder like in one of the posts. I have added the genome count 
and have gotten it to run. However, I got an error as such.

ONCE-ONLY WARNING:
On reading subpopulation from text stream, some of the preexisting 
subpopulation's slots were null.
Had to use newIndividual() instead of readIndividual().  If you're starting 
an evolutionary run by reading an
existing population from a file, this is expected -- ignore this message.
ONCE-ONLY WARNING:
On reading subpopulation from text stream, some individual indexes in the 
subpopulation did not match.
The first was individual 1, which is listed in the file as 2
Exception in thread "Thread-8" java.lang.NullPointerException
	at MyOptimiser.MyOptimiser.evaluate(MyOptimiser.java:81)
	at 
ec.simple.SimpleEvaluator.evalPopChunk(SimpleEvaluator.java:146)
	at ec.simple.SimpleEvaluatorThread.run(SimpleEvaluator.java:177)
	at java.lang.Thread.run(Unknown Source)
Generation 1


My pop.in file looks like this.

Number of Individuals: i2|
Individual Number: i0|
Evaluated: F
Fitness: f0|0.0| 
i4|f1056964608|0.5|f1056964608|0.5|f1056964608|0.5|f1056964608|0.
5|
Individual Number: i1|
Evaluated: F
Fitness: f0|0.0|
i4|f1065353216|1.0|f1065353216|1.0|f1065353216|1.0|f1065353216|1.
0|
Individual Number: i2|
Evaluated: F
Fitness: f0|0.0|
i4|f1048576000|0.25|f1048576000|0.25|f1048576000|0.25|f104857600
0|0.25|
Individual Number: i3|
Evaluated: F
Fitness: f0|0.0|
i4|f1061158912|0.75|f1061158912|0.75|f1061158912|0.75|f106115891
2|0.75|

Oddly, when I don't add the third individual I will get a preamble error 
where Indiviudal Number: is expected.

There was a comment about using printIndividual(..). How can I use this 
method? The method requires EvolutionState, ParameterDatabase etc. I 
have a set of individuals that I want to format external from the ECJ 
framework itself. Is there a way that I can use printIndividual(..) without 
having to construct the whole framework?

thanks.