OK, that's more information
As seen in the hs_err dump, the initialization runs in "Thread-0" (see Line with Java Threads: ( => current thread )).
This should happen in AWT EventQueue.
Please place that initialization Runnable into the EventQueue, not in a new Thread.
e.g. do following:
instead of
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new Thread(runnable).start();
do
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SwingUtilities.invokeAndWait(runnable);
I hope that should do the trick.