Error trying to run LZ Beta 2 on a Ubuntu 22.04 variant

Software Lightzone
1

Greetings,

I’m getting this error on my Elementary OS v7.1 (Ubuntu 22.04 variant) when running LightZone Beta 2:

Starting LightZone version 5.0.0 beta2 …
with options :
openjdk version “11.0.28” 2025-07-15
OpenJDK Runtime Environment (build 11.0.28+6-post-Ubuntu-1ubuntu122.04.1)
OpenJDK 64-Bit Server VM (build 11.0.28+6-post-Ubuntu-1ubuntu122.04.1, mixed mode, sharing)
/usr/share/java/lightzone/:/usr/share/java/
Error: LinkageError occurred while loading main class com.lightcrafts.platform.linux.LinuxLauncher
java.lang.UnsupportedClassVersionError: com/lightcrafts/platform/linux/LinuxLauncher has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 55.0

Any thoughts would be appreciated.

2

You need to upgrade your Java version. Java 11 is too old to run that build. You’ll need Java 17 or later. The package name is probably something like openjdk-jre.