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Purchased the aforementioned DLC a few days ago, still hasn't showed up in Galaxy in my list of DLCs.

Anyone else experiencing this?

EDIT: It was a bug on GOG's side. Fixed now. Also had a very pleasant experience with GOG support (no that was not sarcasm).
Post edited June 23, 2016 by SilasOfBorg
Lucky for you, support won't even answer my ticket. Been a week and nothing, even after I emailed them twice more.