Hello I think I'm confused by what is the current/trunk/development versions? I have downloaded 1.4 which I think is the trunk? I had to change a few keywords (Mapped -> StringReader) to make my old code work. But I do not see the useful countKmers function that I downloaded the latest version for: countKmers(kmerCounts, sequence, k) countKmers(kmerCounts, backgroundFrequencies, sequence, k) countKmers(kmerCounts, bgModel, sequence, k) This should be in align_free and align_free.h ? Is this in a dev version somewhere? Thanks Stephen Henderson UCL Cancer Institute