It is still valid even with OpenJDK 11 that FRD does not work properly on it. It partially works on Oracle JDK13 with various errors (for example plugins update does not work): https://www.oracle.com/technetwork/java/javase/downloads/jdk13-downloads-5672538.html ...but I consider it as non-working for me. Finally I have been able to get it up and running now on Oracle JDK 8: https://www.orby fedoraptor - FreeRapid Downloader - General