Hi people, I'm presently trying to use the gmaj tool in galaxy and I have encounter and error when I try to make available the annotation data corresponding to each genome in the alignment. I think my problem results from not knowing how to format the internal structure of the exons file, I'm pointing gmaj directly to each gff3 file I have constructed for these genomes. The error that occurs is: “Warning: No genes found in exons file.” My question is how to format properly the exons file (I think it would be helpful to have available a sample of the internal structure of the exons, underlays, etc files). In the text bellow goes a sample of my gff3 file. Any help will be very welcome, Paulo Ps. A sample of an exons file that someone used with gmaj would be helpful to check the internal structure of the exons file.