Managing director David Laney told The Grocer it was a "miracle we opened at all" after the system for the Warrington store went down the day before the opening and again two hours before the doors were due to open.
That meant only 30% of product lines were priced on opening and just 60% by close on Sunday. Laney said all issues were finally resolved by Monday evening and the store was now trading normally.
Laney insisted the launch was still a success as the store attracted 1,500 paying customers on the opening day, with many saying they would continue to shop there. He praised the efforts of staff, with many including Laney working for 38 hours without sleep at the weekend.