Former Prime Minister Jenny Shipley and husband Burton were in court for the opening day of the high-profile case against Mainzeal's former directors.
They include Shipley, career director Paul Collins, and Richard Yan, head of Richina Pacific, which owned Mainzeal.
The building company collapsed in early 2013 owing more than $115 million to unsecured creditors. Problems included leaky buildings, cost overruns on the Vector Arena project and a lack of financial support from Richina when times got tough.
In court today, lawyers for the liquidators BDO argued Mainzeal was "dangling by a thread" and directors should have understood the risk.
"If you are profitable, you might be funded, but if you are not profitable, you aren't going to be funded," Mark O'Brien QC said.