The delegates couldn't agree on whether the executive should be a single person, or a board of three.
Delegates from other countries agreed that much had been achieved.
The delegates agreed to appoint a committee to study the proposal.
The delegates have agreed on some 140 articles of the draft constitution over the last two and a half weeks.
But the delegates could not even agree on this diluted package.
Delegates simply agree to the decisions made by the party leaders as to whose names will appear on the ballot in November.
The delegates agreed and then took a break for Christmas Day.
The delegates did, however, agree on one small item.
By 1,138 votes to 839, with 58 abstentions, the delegates agreed.
The delegates agreed to suspend the talks and resume them no later than May 2000.