I've tried restarting the launcher, checked in the running processes but no other instance was open.---------------------------
An error occurred while updating
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Error updating game files. Perhaps the file is open in another program or run an instance of the game.
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OK
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The program is installed on a custom location : D:\Games\Starfall Tactics
I'm unable to patch and thus play the game. If any more information is needed or things I can try, let me know.