The issue is in the /usr/bin/iriverter script. It refers to /usr/lib/java/swt-gtk-3.5.jar but the distro contains -3.5.1.jar
Just update the final line of the script to add the ".1":
... /usr/lib/java/swt-gtk-3.5.1.jar org.thestaticvoid.iriverter.ConverterUI $*
The issue is in the /usr/bin/iriverter script. It refers to /usr/lib/ java/swt- gtk-3.5. jar but the distro contains -3.5.1.jar
Just update the final line of the script to add the ".1":
... /usr/lib/ java/swt- gtk-3.5. 1.jar org.thestaticvo id.iriverter. ConverterUI $*