Lindsay Lohan says she skipped the Venice Film Festival to "focus on my health and well-being".
Lohan wrote on her website that she never confirmed she would be in Venice to promote Paul Schrader's The Canyons.
She said would have enjoyed being at the festival, "but my focus is on my health and well-being. Plain and simple, it is of the utmost importance."
Schrader declared himself "a free man" after she failed to show, saying "for the last 16 months I've been hostage, by own choosing, to a very talented but unpredictable actress".
He said she had confirmed she would be there.
Lohan, 27, has been plagued by legal and substance abuse problems in recent years.
She completed her latest court-ordered stay in rehab in July.