Waveform File not Running Under Simulation

Hi All,

I am completely new to this forum and to the Quartus II software and am seeking a bit of guidance. I have created an encoder that generates partity bits based upon XOR gates. I have 3 input pins and 3 output pins. When I compile the initial encoder, i get no errors reported. I have now created a vector waveform file to check that the encoder is operating correctly by simulating all possible inputs. All input and outpins are present in the waveform file, with input pin 1 being set a clock value every 50us, pin 2 ever 100us, and pin 3 every 200us. I have ensured that the following is checked 'Overwrite Simualtion Input File with Simualtion Results' and I have made the new vector waveform file the input for the encoder under simulator settings. When i try to run the simulation, I get the following error.

Info: *******************************************************************
Info: Running Quartus II Simulator
 Info: Version 9.1 Build 350 03/24/2010 Service Pack 2 SJ Full Version
 Info: Processing started: Wed Nov 13 10:04:24 2013
Info: Command: quartus_sim --read_settings_files=on --write_settings_files=off CODEC -c ENCODER
Error: Run Generate Functional Simulation Netlist (quartus_map ENCODER --generate_functional_sim_netlist) to generate functional simulation netlist for top level entity "ENCODER" before running the Simulator (quartus_sim)
Error: Quartus II Simulator was unsuccessful. 1 error, 0 warnings
 Error: Peak virtual memory: 153 megabytes
 Error: Processing ended: Wed Nov 13 10:04:24 2013
 Error: Elapsed time: 00:00:00
 Error: Total CPU time (on all processors): 00:00:00

As vague as my description is, is anyone able to shed any light on a possible reason why I may be receiving this? I have attached my project file in the .ZIP attached which may help to illustrate the problem. I am expecting the waveform output pins to change to simulate the different parity bits that have been generated. Any help would be greatly appreciated.