James Packer's Crown Limited insists it is still committed to its promise to buy a suite of US casinos, but has warned that the earnings they will produce will be up to 30 per cent lower than previously anticipated. The Crown chief executive, Rowen Craigie, yesterday emphasised the company was working on finding a solution to save the deal from collapsing. The Pennsylvania Gaming Control Board cannot agree to the deal because Gretel Packer...