Error: Peak virtual memory: 255 megabytes (Quartus)

Hi I have a problem every time command to simulate I get this error. Al copilar not give me any error. Only when command to simulate someone who can help me? FPGA

 Info: Running Quartus II Simulator
Info: Version 9.1 Build 350 03/24/2010 Service Pack 2 SJ Web Edition
Info: Processing started: Thu Jun 16 11:48:08 2016
Info: Command: quartus_sim --read_settings_files=on --write_settings_files=off Digital -c Digital
Info: Can't find specified vector source file "C:/Users/Javier/Documents/Proyectos Quartus/Practica3.cvwf"
Error: No valid vector source file specified and default file "C:/Users/Javier/Documents/Proyectos Quartus/Digital.cvwf" does not exist
Error: Quartus II Simulator was unsuccessful. 1 error, 0 warnings
Error: Peak virtual memory: 155 megabytes
Error: Processing ended: Thu Jun 16 11:48:09 2016
Error: Elapsed time: 00:00:01
Error: Total CPU time (on all processors): 00:00:00