Lux in tenebris
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Kayman036, try uninstalling the game and reinstalling it. If possible, clean the registry of any remaining files related to Heroes 5. Install it in the default directory.
Евангелие от Иоанна, 1.5: Lux in tenebris lucet, et tenebrae eam non comprehenderunt. Свет во тьме светит, и тьма не объяла его.