There are serious concerns that the National Monument site at Moore Street will continue to lie derelict for the 1916 commemorations.
A number of high-level meetings took place to salvage the monument following a Dublin City Council (DCC) vote last November that rejected a land-swap deal and a museum being built at 14 to 17 Moore Street in time for 100th anniversary of the Easter Rising.
"I'm concerned we will have a derelict site there for 2016," said Independent councillor Nial Ring, chairman of the Moore Street Advisory Committee.
The committee has held several crisis meetings with TDs and Arts Minister Heather Humphreys since the November vote. The latest meeting was held with an Oireachtas committee on January 22.
DCC owns 24 and 25 Moore Street. The buildings at 14 to 17, which have had National Monument status since 2007, are owned by Chartered Land.
A preservation order was put on 14 to 17 because number 16 is the site of the final headquarters of the Irish leaders of 1916.
Under the land-swap deal, DCC was to turn over 24 and 25 to Chartered Land in return for a museum, funded by NAMA, at 14 to 17 Moore Street.
This deal was rejected by Sinn Fein, Fianna Fail and People Before Profit. Sinn Fein argued that the land-swap would lead to the demolition of most of the 1916 battle site.
Ms Humphreys said she was disappointed that the deal was rejected but that it was a matter for DCC and the monument owners.
A DCC spokesman said the issue was with the developer and NAMA.
"It is DCC's understanding that Chartered Land and NAMA are reviewing the implications of this rejection," he said