I'll test it again in the version you mentioned. There was no problem when I tested it on another Windows computer. I have tested it in the latest version 1.9.4.9. 👍 It might have been introduced with the new version 1.9.4.9. Please let me know if it works on version 1.9.4.8 or 1.9.4.7 or not. you can change this line: set J2D_D3D=true And you just uncomment this line, if you are running with Java older than version 12: set _JAVA_OPTIONS='=allow' I have created a new alpha version for the next version of Robocode, where I updated all the script files for starting Robocode: Read the robocode.bat into a text editor / IDE and have a look at the various settings. into: set J2D_D3D=false And you just uncomment this line, if you are running with Java older than version 12: set _JAVA_OPTIONS='=allow' you can change this line: set J2D_D3D=true. RobocodeEngine cannot find compiled robot that is not 'starred'ĪrrayIndexOutOfBoundsException in options windowġ.9.3.9 net.sf. failsĮxcluded bots are removed from LiteRumble