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I am unable to pickup any items. I cannot pickup items from killing monsters or chests or quests.
Nothing happens when I try and pickup items. I did not install the game with GoG.

Is that the problem.

Please help
Is it a legit copy of the game?
MedeaFleecestealer: Is it a legit copy of the game?
Apparently not.
Well, trying to work out whether they mean they didn't use GOG Galaxy and did it from GOG's manual installers or whether it's a pirated copy.