David Bain campaigner Joe Karam and the head of a protest group failed to resolve their legal battle over comments made online in court today.
Karam is suing Kent Parker, the head of the group Justice for Robin Bain, for defamation.
Karam alleges Bain was defamed numerous times following his acquittal on a website and Facebook page overseen by Parker.
Parker staged a musical demonstration outside the High Court in Auckland today before the confidential settlement hearing.
However, the pair failed to resolve their differences and will return to court in a fortnight.
Bain was convicted in 1995 for the murder of his parents and three siblings in Dunedin in 1994.
In 2007, the Privy Council quashed his convictions on the grounds of a substantial miscarriage of justice and ordered a retrial, which took place in Christchurch in 2009, where a jury found him not guilty.