Tensions had existed between the Salkinds and Richard Donner throughout the almost nineteen months of filming it had taken to complete
Superman and most of
Superman II. The producers blamed the director for going wildly over budget and schedule. Donner claims he was never given a budget, nor a schedule. In the
commentary track on the 2006 DVD release of the theatrical version of
Superman II, co-producer
Pierre Spengler recounts that Donner was indeed invited to return to complete the film as director, but, according to an
Army Archerd/
Variety magazine interview, Donner declared that if Spengler remained on the picture, Donner himself would not return to direct. In the same commentary, Ilya Salkind states the removal of Spengler was allegedly one of many demands made by Donner, who, he claimed, also wanted
final cut of the film and more control over the production, demands to which the Salkinds weren't willing to agree.