Complex sentence: It received mixed critical reaction and was unable to make a profit due to World War II cutting off the profitable European market, the film's high production costs, and the expense of leasing theatres and installing the Fantasound equipment for the roadshow presentations.
Split into simpler sentences: It received mixed critical reaction and was unable to make a profit. In part this was due to World War II cutting off the profitable European market, but due as well to the film's high production costs and the expense of leasing theatres and installing the Fantasound equipment for the roadshow presentations.