It was only last week that Kanye had to postpone shows in Vancouver, Anaheim, and Denver do to an equipment truck crash that resulted in damage to a 60-ft circular LED screen used as part of the stage design. The Chi-Town shows were slated for November 7 and November 9 at the United Center, and a rep for the venue would only confirm that the shows were postponed, but wouldn’t detail the reason or when they would be rescheduled. It seem likely the cancellations are due to Kanye not yet finding a new LED screen.

Source: complex.com