President Chen Shui-bian (陳水扁) attended the meeting arranged by Chang and Minister of Foreign Affairs Tien Hung-mao (田弘茂) attended the one arranged by Yao.
Chang claimed the president's move was indicative of his support for Chang's "legitimate" position as the league's leader.
But the infighting did not end and negotiations between the two factions over the past few months have come to nothing, insiders said.
Ger said the dispute was "a showcase" for the fighting in Taiwan's domestic politics, adding that Chen would be the only person that could bring the dispute to a halt.
The foreign ministry official said, however, that it was difficult to say who was the "legitimate" president according to the League's charter.
The current fiasco in the 40-year-old League could weaken the operations of the organization, the official said, adding: "It's really valuable for us to have the League to take part in UN activities. And it would a great blow if we lost this opportunity."
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