simulating on mentor graphics tools

Dear all,
I'm using the mentor grahics tool fot designing an inverter and the following errors comes up to me each time
ERROR 1577: In file "./1st-inverter-testbench_default.spi" line 19:
+ OBJECT "X_1ST-INVERTER-TRIAL1.MS2": Model 1ST-INVERTER-TRIAL.PCH not yet defined.
ERROR 1577: In file "./1st-inverter-testbench_default.spi" line 19:
+ OBJECT "X_1ST-INVERTER-TRIAL1.MS2": Model 1ST-INVERTER-TRIAL.PCH not yet defined.
ERROR 1577: In file "./1st-inverter-testbench_default.spi" line 20:
+ OBJECT "X_1ST-INVERTER-TRIAL1.MS1": Model 1ST-INVERTER-TRIAL.NCH not yet defined.
ERROR 1577: In file "./1st-inverter-testbench_default.spi" line 20:
+ OBJECT "X_1ST-INVERTER-TRIAL1.MS1": Model 1ST-INVERTER-TRIAL.NCH not yet defined.
attached is the schematic im trying to simulate
thanks

include modes for n and p mos
and give ports correctly

if required re make the symbol

it should work

did you solve the problem i am also facing the same problem please let me know

hi i am very new to mentor DAIC tool i am getting same error
what can be the reason for this ..............