XO Music Festival was slated to take place this weekend, July 12th to 15th, in Antioch, California. It promised seven stages, performances by 100 artists including Ludacris, Vanilla Ice and T.I., and a litany of Instagram-minded perks such as a foam pit, a color arena, an indoor skating rink and something billed only as an “interactive bounce arena.” Days before the start of the show, however, several artists dropped out of the lineup citing incomplete or missing payment, and Bay Area news outlets reported that other musicians were increasingly worried about whether the show was still taking place. On Wednesday, Contra Costa Event Park, the festival’s venue, suddenly released a statement canceling the festival entirely, “due to the promoters’ lack of fulfilling contractual obligations.”