Hi. I'm using WEKA 3.6.1. I moved \lib into WEKA directory and put wekaalgos.jar in it. Then, I change runweka.ini at the very last line where %classpath% present. I change it to %CLASSPATH%lib/weka;wekaclassalgos.jar and the exploror's classifier shows the algorithms. However, the result seems weird, like absolute error = 90 or something. In short, the algorithms provide me little value so far.