Topic: RadioSparx - Website Player, R-Box Pearl, RS-PLAY, and Playback Issues
Article ID: KB4438
Last Reviewed: May 27, 2025
R-Box Pearl Won't launch on Windows if the Java Version Does Not Support It
If you ever encounter a situation where rbox.jar will not execute and launch the R-box Pearl software, run this DOS command:
javaw.exe -jar "C:\path\rbox.jar"
javaw.exe -jar "C:\path\rbox.jar"
And this may likely show you that JavaFX has been removed from the Java JDK version being used on that Windows computer. To solve this,
uninstall Java and then install version 8u441 which is the last Oracle build that still shipped JavaFX. Version 8u441 can be downloaded from here:
uninstall Java and then install version 8u441 which is the last Oracle build that still shipped JavaFX. Version 8u441 can be downloaded from here:
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