LONDON — IFC Entertainment has picked up North and Latin American rights to “Lost in La Mancha: The Un-making of Don Quixote,” a feature documentary about the collapse of Terry Gilliam’s movie “The Man Who Killed Don Quixote.”

Directed by Keith Fulton and Louis Pepe, the doc will have its world premiere Feb. 11 in the Panorama sidebar of the 52nd Berlin Intl. Film Festival, which unspools Feb. 6-17.

Fulton and Pepe had planned a behind-the-scenes TV special about the making of Gilliam’s film. But when the $35 million production fell apart six days into principal photography after lead actor Jean Rochefort fell ill, the docmakers found themselves with a different story to tell.

With Gilliam’s cooperation, they and producer Lucy Darwin have spent a year expanding their project into a full-scale feature, which is being sold worldwide by Tequila Gang.