[Qt-creator] Core dump during activating setup dialog

[Daniel Teske]

That's a strange backtrace. Opening the settings dialog initializes designer 
plugins. Somehow that results in a LanguageChange ChangeEvent, which tries to 
retranslate the ui of the context pane of the qml designer. Or maybe I'm 
reading it wrong, since actually ContextPaneWidgetImage::changeEvent is 
missing, which should have been called. 

> #0  0x00007fd39639cb97 in Ui_ContextPaneWidgetImage::retranslateUi(QWidget*)
> #23 0x00007fd3a51a1ab9 in Core::Internal::SettingsDialog::execDialog()

So any more info? Does it happen everytime? Could you try running Creator in a 
environment which has QT_PLUGIN_PATH unset? Which Desktop environment, which 
languages. 

daniel