I am trying to make a haplotype network with popART, for the haplotypes instead of choosing one gene, I am adding together to alignements of related genes. This gives me an alignement of 5.7Kbp.

When opening the .nex file it gives me an error "Error parsing sequence data --> Too many characters read!"

I had ot do this directly on the notepad, copy/pasting, and editing by hand some parts, but i made sure that all sequences are present in the taxa table, all sequences are in the sequence matrix (with appropiate separation), and that the number of characters per sequence is correct.

I am currently lost if I am messing something up, or if 5.7Kbp is too much for PopART to handle.