Rui, your pop.in file is missing information. The genomes are all missing their length information. If you put i5| in front of each of the genomes things will probably work. But in *general*, I recommend using printIndividual() instead of what you're doing because it'll always generate the right information. Sean On Nov 11, 2012, at 5:22 AM, SUBSCRIBE ECJ-INTEREST-L Anonymous wrote: > Hello Sean, > > I'm still not getting it. > > When the parameters file is read, it will read "pop.subpop.0.file = pop.in" and find > pop.in file. > > Then anything in pop.in file has to be in a coded form of > Number of Individuals: i5|.... > > In order to get this coded form, I need to use printIndividual() instead of > Code.encode()? > > Rui