A representative for Lindsay Lohan has denied rumours that the actress has been causing problems on the set of Charlie Sheen.
The New York Post claimed that the troubled star "freaked out" and "disappeared" after being asked to perform in a scene that mocked her previous personal issues.
A source told the tabloid: "Lindsay missed every meeting she had for the film, including script reads and wardrobe meetings.
"Then she missed her flight to Atlanta on Sunday to shoot the movie. The producers had been getting signs Friday that she was a mess, and would not be fit to work."
The paper claimed that Li-Lo only capitulated and turned up on set after production company Dimension threatened legal action and sent a private jet to collect her.
However, a spokesman for the 26-year-old dismissed the report, saying: "These stories are untrue, and she is willingly fulfilling all of her obligations."