The full versions formed part of an electronic police brief, but Magistrate Christopher Callaghan was concerned about complying with the Justices Act.
"I'm just worried that if the statements aren't individually admitted into evidence ... and signed, what happens if one of the witnesses dies?" he asked.
"It's just a problem that's been raised ... in recent times."
Ms Johnson requested the matter be adjourned with the agreement of Tostee's lawyer Nick Dore.
A full hand-up committal will be held on October 15.
"And you'll have a bundle of statements, in folders, indexed," Magistrate Callaghan told Ms Johnson.
"I hope so," she replied.
The magistrate said the requirement was from an 1886 Act "which hasn't kept up with technology."
Outside court, Mr Dore declined to say how his client will plead.
"Given the matter is currently still before the court, we're reluctant to say anything further other than the delay today is not due to Mr Tostee," he said.
"Mr Tostee is continuing to cooperate with the courts and wishes for the matter to be dealt with as quickly as possible."
Tostee has served 10 months behind bars for a high-speed police pursuit which took place after a music festival in Byron Bay in July last year.
He has taken to both social media and a bodybuilding forum to proclaim his innocence in Ms Wright's death and also changed his name by deed poll to Eric Thomas.
READ MORE: Gable Tostee back on social media
He still appeared before the court under the name Gable Tostee.
- AAP
