Odpovím si sám. FRD nefunguje s OpenJDKby kaneeec - FreeRapid Downloader - General
I don't remember what changes I've made since the FRD was working, but now I get this exception everytime I try to run it. Language: JavaException in thread "AWT-EventQueue-0" java.lang.ExceptionInInitializerError at org.jdesktop.application.ResourceManager.createResourceMap(ResourceManager.java:443) at org.jdesktop.application.ResourceManager.createResourceMapChain(Resouby kaneeec - FreeRapid Downloader - General