I run Debian Testing x64. I installed oStorybook version 5.05.02 with the .deb installer. This version of oStorybook crashes on start-up:
Error report ==>
zaleksf@box0:~$ ostorybook
Java VM version:
openjdk version "1.8.0_265"
OpenJDK Runtime Environment (build 1.8.0_265-8u265-b01-1-b01)
OpenJDK 64-Bit Server VM (build 25.265-b01, mixed mode)
starting oStorybook ...
OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
Set Preferences version to 5.05.02
SbApp.init() Exception:1
java.lang.ArrayIndexOutOfBoundsException: 1
    at storybook.App.initI18N(App.java:137)
    at storybook.App.init(App.java:98)
    at storybook.App.lambda$main$2(App.java:609)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
    at org.GNOME.Accessibility.AtkWrapper$6.dispatchEvent(AtkWrapper.java:705)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Exception Message:
1

Stack Trace:
java.lang.ArrayIndexOutOfBoundsException: 1
    at storybook.App.initI18N(App.java:137)
    at storybook.App.init(App.java:98)
    at storybook.App.lambda$main$2(App.java:609)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
    at org.GNOME.Accessibility.AtkWrapper$6.dispatchEvent(AtkWrapper.java:705)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Please report this exception to the development team.
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This crash occurs regardless of whether I force oStorybook to use java8 or the default system java11.
oStorybook version 5.04.05d runs just perfectly on my exact same system.
Please let me know if there is anything I can do to help troubleshoot this issue.
Thanks and sincere regards,Steve Zalek

Hello, impossible to reproduce this anomaly, yet I have the same type of configuration as yours.

By the way, I've rebuilt the package, try to reinstall it.