Warnock said: "I haven't got a clue how he missed that. I thought he had had a bet on the game, because there is no other way to explain it.
"It was a bad miss and it gets worse every time you look at it. And instead of going a goal up we lose by three, which could have been five. I've told him to come up and tell you how he missed it. I'm not sure he will though.
"We could have been 2-0 up by half-time. I am glad we have got Reading followed by Sheffield United up next. We do a lot better against the big teams."
Palace's players were told last week their November wages would be delayed until Tuesday at the earliest, due to chairman Simon Jordan's "cash-flow problem".
But Warnock denied this had anything to do with the performance against Rovers.
"I'd love to blame it on that, but that wasn't the case," he added.
Rovers boss Sean O'Driscoll was obviously the happier manager.
"I thought we were excellent. Palace are a difficult team to defend against and we took our chances well.
"In this division you need a little bit of luck and we took it. Regardless of the result, I told my players they were organised, our back four especially."