Java library unable to import from itself (netbeans, neuroph)

Question

I have a project in which I use the neuroph library to create neural networks (http://neuroph.sourceforge.net/, version 2.96). I also wanted to use the neat preview library (https://sourceforge.net/projects/neuroph/files/NEAT-preview/, version 0.9), which is a support library for neuroph.

Neuroph core classes are in the package org.neuroph., Neat classes are in org.neuroph.contrib.neat.

While I had no problems importing and working with neuroph, when I imported the neat library, it did not recognise its imports from org.neuroph.core. in it's own classes (the neuroph core library) and threw an exception when used in the project.

I first tried importing the neat library as a normal library like any other with the described result, afterwards I configured it as a secondary classpath/source/javadoc for the original neuroph library. (As you can see in my screenshots), which didn't change anything. I have attached screenshots of the configuration of the library in netbeans, the way the libraries appear in netbeans and the error itself.The library configuration The library as it appears in netbeans The error message in the code

I have already cleared the netbeans cache and cleaned and rebuilt the project several times with no improvement.