Goals inside the first seven minutes from Peter Clarke and Robbie Simpson got Huddersfield on their way before Adam Le Fondre made it competitive.
"We just didn't get going," said Robins. "Maybe it's a hangover from Saturday, maybe it's Tom Pope's injury. Paul Warne dropped out before the game as did Pablo Mills and we then lost Micky Cummins early in the game.
"So I had some decisions to make before the game because Warne and Mills would have been involved. We huffed and puffed for a second goal but we couldn't get there. However, there was some good stuff mixed in amongst it.
"Hopefully we will be getting one or two back for the weekend but it is certainly not ideal because Chesterfield is a massive game for us on Saturday."