error in cadence simulation

[lokesh]

Dear all,
I was trying to run a simple simulation in cadence Spectre. I got the
following error. Any idea what it could mean?.
/***********************
*Error* Errors encountered during simulation. The simulator run log
has not been generated.
Possible cause could be an invalid command line option for the version
of the simulator
specified in the userCmdLineOption field are supported for the
simulator.
Alternatively, run the simulator standalone using the runSimulation
file in the netlist
directory to know the exact cause of the error.
/***********************
Since I'm new to schematic, I'm not sure about the error. I also tried
running the netlist as said in the error message, but it didn't work(I
tried simulating both 'input.scs' and 'runSimualtion' file ).
/cad/tools/cadencetools/mmsim_6_1/tools/bin/spectre: line 180: 8906
Killed /cad/tools/cadencetools/mmsim_6_1/tools.lnx86/
spectre/bin/spectre input.scs

Thanks and regards,
Lokesh