Updated to Java 8, but I can't run battles for rsalesc.Roborio and xander.XanderCat. Seems that they are made with Java 9 specific things. So if anyone else with Java 9 can also run Gigarumble, the ranking can become complete.
Suddenly Roborio works, with some luck XanderCat will also . . .
Team rumble and Twin Duel are broken in Java 9. I won't upgrade until the Robocode engine is fixed.
Both works fine here in Java 8, so maybe restarting the rumble/cleaning the caches helps? btw I would like to run Gigarumble as well, may you post a working config file for it? Hope that is included in the next release of robocode.
I removed the caches from all installations (RoboRumble and GigaRumble are separate installs), and now XanderCat also works! I can't run battles till I get home though, as the firewall at work prevents download/upload of necessary files and results.
My config file is listed in the discussion below. The gigarumble.bat file contains:
java -Xmx512M -cp libs/robocode.jar;libs/roborumble.jar;libs/codesize-1.1.jar; roborumble.RoboRumbleAtHome ./roborumble/gigarumble.txt