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After calculating the display name General NetBeans Settings for the node for Wizards/Setup/org-netbeans-core-ui-IDESettingsPanel.instance: AWT-EventQueue-0 is not a daemon. Exception is attached.
Created attachment 2952 [details] exception stack trace
I know about it, it is a threading problem. The code itself is fine, only a bug in the test.
Oh, actually this is a different problem, but anyway I rewrote the test to be more reliable and it should pass now.
Closing.