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Charles Oakley is still ruffling feathers.

The former Knick, who was ejected from Madison Square Garden in February, upset a guest at his party at Midtown strip joint HeadQuarters gentlemen’s club on Thursday.

Von Decarlo, a comic and SiriusXM contributor, posted on Instagram of an incident with Oakley: “I’m utterly disgusted & disappointed in how I was treated tonight by #CharlesOakley.”

She further alleged, “So unprofessional and rude. Extremely nasty, bitter man.”

We’re told Decarlo approached Oakley to give condolences over the death of their mutual friend, former Knick Anthony Mason.

But she claims he told her, “You can sit next to me, but I don’t want to take a photo with you.”

Decarlo says she was “aggressively disrespected” and is demanding an apology. But Oakley had a good time, according to a spy, “getting tipsy with various dancers on his lap.”

A rep for Oakley insisted, “Charles was extremely professional. He was courteous, took photos with a lot of guests. I think a lot of people would say how nice he was . . . He was very polite, very kind to all the guests.”