I am trying to use the Phyml tool with a multiple sequence file in the PHYLIP format as the input. However, I get the "Unexpected error: no inferred tree result file." error. I just don't get it as my input does not show any difference to the example input file. I am linking the file giving the error. Also, one of the options on Phyml is to specify the number of datasets. I don't understand what it means by multiple datasets. Any explanation is appreciated.