I installed a fresh copy of Windows 10 (Education version)and discovered that when I run Pentaho PDI (version 5.4) that I am unable to connect two steps together. Normally there is a dialog window that opens where you can select the add hop but nothing.
I installed the JRE and JDK versions of Java. No other issues that I have nothing with other application using Java.
I did make the discovery this evening if I place two steps on the work surface and then attempt to execute the transformation, it fails like you except however now I can connect those two steps. Adding another step, you cannot connect until execute the script. Strange.
Does anyone have any ideas on how to approach this issue?
Many thanks Ray