El diccionario combinado no es válido. Un ResourceDictionary se está colocando en su propia colección MergedDictionaries o bien se está agregando dos veces a la misma colección MergedDictionary.

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Unlocalized message

The merged dictionary is invalid. Either a ResourceDictionary is being placed into its own MergedDictionaries collection or a it is being added to the same MergedDictionary collection twice.

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Finnish (suomi) French (Français) German (Deutsch) Greek (Ελληνικά) Hebrew (עברית) Hungarian (magyar) Italian (Italiano) Japanese (日本語) Prior (Message) Korean (한국어) Norwegian (Bokmal) (Norsk (Bokmål)) Polish (Polski) Russian (Русский) Swedish (Svenska) Turkish (Türkçe) Arabic (العربية) Chinese (Simplified) (中文(简体)) Chinese (Traditional) (中文（繁體）) Next (Message) Czech (Čeština) Danish (Dansk) Dutch (Nederlands) Chinese (Simplified) (中文(简体)) Chinese (Traditional) (中文（繁體）) Portuguese (Brazil) (Português (Brasil))