Reports say disagreements between chairman Pushpa Kamal Dahal 'Prachanda' Prachanda and vice-chairman Narayan Kaji Shrestha on policy towards India delayed the start of the session.
As opposed to Prachanda and his aides who want the party to adopt a softer policy towards India, Shrestha and several others want the party to maintain a hard stance towards New Delhi.
"We are in government. We can't use provocative words (against neighbouring countries) in the chairman's political document," Kumar Poudel, a leader close to Prime Minister Baburam Bhattarai told 'The Kathmandu Post'.
Shrestha had even threatened to present a separate political document if Prachanda's paper failed to include 'national independence' - which in Maoist parlance means freedom from New Delhi's interference.