Error: Failed to refresh PTF file

[Altera_Forum]

Can anyone please tell me how to resolve above mentioned error. I am new to SOPC builder. When I am trying to generate SOPC system. I am getting following messages: 

 Info: Starting PTF file elaboration. bash.exe: warning: could not find /tmp, please create! C:/altera/91/quartus/sopc_builder/bin/nios_sh: line 32: tr: command not found C:/altera/91/quartus/sopc_builder/bin/nios_sh: line 45: uname: command not found C:/altera/91/quartus/sopc_builder/bin/nios_sh: line 46: grep: command not found C:/altera/91/quartus/sopc_builder/bin/nios_sh: line 47: grep: command not found C:/altera/91/quartus/sopc_builder/bin/nios_sh: line 48: grep: command not found /cygdrive/c/altera/91/quartus/bin/cygwin/bin/sh: C:/altera/91/quartus/sopc_builder/bin/sopc_builder: /bin/sh: bad interpreter: No such file or directory error: failed to refresh ptf file Info: Finished elaborating PTF file. Executing: C:/altera/91/quartus//sopc_builder/bin/sopc_builder --classic --generate C:/Tejas/QuartusII/ICS8580A_110106_B4_restored/ICS8580SOPC.ptf Info: Starting generation... bash.exe: warning: could not find /tmp, please create! C:/altera/91/quartus/sopc_builder/bin/nios_sh: line 32: tr: command not found C:/altera/91/quartus/sopc_builder/bin/nios_sh: line 45: uname: command not found C:/altera/91/quartus/sopc_builder/bin/nios_sh: line 46: grep: command not found C:/altera/91/quartus/sopc_builder/bin/nios_sh: line 47: grep: command not found C:/altera/91/quartus/sopc_builder/bin/nios_sh: line 48: grep: command not found /cygdrive/c/altera/91/quartus/bin/cygwin/bin/sh: C:/altera/91/quartus/sopc_builder/bin/sopc_builder: /bin/sh: bad interpreter: No such file or directory error: system generation failed.

[Altera_Forum]

If you are under Win7 or Vista system ,you should shutdown the function of UAC.