I am working with the Knime version 3.1. I faced some issues when i tried to work with Weka nodes for example: bagging. I can not choose a classifier. there is a choose button in the weka bagging node configuration but no list of classifiers appear. Same happens to other weka nodes like boosting and so on.
I am also use the Knime version 3.1. I faced similar problem with Weka nodes for example: SMO classifier. I can not chnage or choose kernel type. A choose button exist in the confuguration window of weka SMO node but no list representing the kernel types apperaed.