hi the sources jar biojava3-aa-prop3.0.5-sources.jar doesn't seem to be in the right spot: http://biojava.org/wiki/BioJava:Download The requested URL /download/maven/org/biojava/biojava3-aa-prop/3.0.5/biojava3-aa-prop3.0.5-sources.jar was not found on this server. regards inS