Please help with Post-PAR simulation

Hi,

I am using the Xilinx ISE 9.2i to generate the post-PAR simulation model and using ModelSim PE 6.1e to simulate.
However, I get the warning below when I tried to perform post PAR simulation. And all the outputs have the 'U' values.

Loading work.tb_post_par_sim(func)
# ** Warning: (vsim-3473) Component instance "pnr_sim_inst : ssdn_bb_fpga_ert_timesim" is not bound.
# Time: 0 ps Iteration: 0 Region: /tb_post_par_sim File: tb_post_par_sim.vhd

Please help on resolving this. I already spent more than a week to deal with this problem.

Thank you very much in advance.

Mike

Mike