This looks like Oracle Integrator and not CloverETL 3.1. I do not know which Java version is supported by Integrator but CloverETL can not run on Java 8 yet. We plan to add support for Java 8 in some of our future releases.
I noticed that your ini file contains a relative path to javaw.exe while mine contains an absolute one. Could you try to change it to the absolute path, please? Also, changing environment variables might not help you in case you installed the software with the Java bundled with it.