Collaber

I have downloaded the latest version of Collaber for Linux (CollaberLinux_x86_V1.3.2), and have OpenJDK Runtime Environment (IcedTea6 1.6) (fedora-33.b16.fc12-i386) installed, but get the error below when I try to run the Collaber executable, has anyone else seen this, and have a fix for it? Thanks in advance.

JVM terminated. Exit code=-1
-Djava.class.path=/opt/CollaberLinux_x86_V1.3.2/plugins/org.eclipse.equinox.launcher_1.0.101.R34x_v20081125.jar
-os linux
-ws gtk
-arch x86
-showsplash
-launcher /opt/CollaberLinux_x86_V1.3.2/Collaber
-name Collaber
--launcher.library /opt/CollaberLinux_x86_V1.3.2/plugins/org.eclipse.equinox.launcher.gtk.linux.x86_1.0.101.R34x_v20080805/eclipse_1115.so
-startup /opt/CollaberLinux_x86_V1.3.2/plugins/org.eclipse.equinox.launcher_1.0.101.R34x_v20081125.jar
-vm /opt/CollaberLinux_x86_V1.3.2/jre/bin/../lib/i386/client/libjvm.so
-vmargs
-Djava.class.path=/opt/CollaberLinux_x86_V1.3.2/plugins/org.eclipse.equinox.launcher_1.0.101.R34x_v20081125.jar