The director of a swanky upstate summer camp allegedly ignored a warning about a molester on his staff months before the accused attacker ended up behind bars, according to a new report.

Camp counselor Dylan Stoltz took a plea deal last year after being charged with sexually assaulting nine boys at Brant Lake Camp north of Lake George — where wealthy Big Apple families pay $14,000 for seven weeks worth of tuition. He was sentenced to 4 1/2 years behind bars.

Camp director Richie Gersten got an email about his longtime employee’s creepy behavior months before Stoltz’ July 2018 arrest, according to a new report in Airmail.