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UPDATE:
A rep for Jaleel White gave this statement to ET: "[White and Kym Johnson] are getting along great. Watch tonight's dance."

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Dancing with the Stars contestant Jaleel White reportedly lashed out at pro partner Kym Johnson during a rehearsal on Friday, causing Johnson to break down in tears.

A source tells Us Weekly that the former Family Matters star, 35, "flipped out" after accidently stepping on Johnson's foot. When Johnson, 35, expressed discomfort and White reportedly began shouting at her, claiming she was "acting like a baby."

Jaleel White: Then and Now!

Johnson reportedly left the studio in tears after White allegedly called her an "idiot."

The news source goes on to report that fellow cast members Donald Driver and Mark Ballas tried unsuccessfully to calm White down.

White reportedly now wishes to have his "own rehearsal space elsewhere" and "refuses to go back to the rehearsal studio again."

In a recent interview with ET, White revealed feeling uneasy while practicing for the show, saying, "I don't know if I'll ever be comfortable with the cameras there for the entirety of rehearsal ... Yeah, [I'm comfortable with] a camera with a great script and 'action' and 'cut' is wonderful but when you have a camera there capturing your missteps and your frustrations, honestly sometimes you just want to punch the camera."

Jaleel White Uncomfortable with DWTS Cameras

This is the first time an event this contentious has ever been reported concerning one of Kym Johnson's DWTS partners.

An all-new DWTS airs tonight on ABC.