In reply to chr_sue:
here are the whole log:
$ vsim -c sv_ams_sin_voltage_gen
Reading C:/modeltech_10.1c/tcl/vsim/pref.tcl
# 10.1c
# vsim -c sv_ams_sin_voltage_gen
# // ModelSim SE 10.1c Jul 27 2012
# //
# // Copyright 1991-2012 Mentor Graphics Corporation
# // All Rights Reserved.
# //
# // THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION
# // WHICH IS THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS
# // LICENSORS AND IS SUBJECT TO LICENSE TERMS.
# //
# Loading sv_std.std
# Loading work.sv_ams_sin_voltage_gen(fast)
# ** Fatal: ** Error: (vsim-3828) Could not link ‘dpi_auto_compile.dll’: cmd = ‘C:\modeltech_10.1c\gcc-4.2.1-mingw32vc9\bin\gcc.exe -shared -o “C:\cygwin\tmp\abdoo@ABDOO-PC_dpi_7916\win32_gcc-4.9.0\dpi_auto_compile.dll” C:/Users/abdoo/work_dpi\auto_compile@\win32_gcc-4.9.0*.o -L"C:\modeltech_10.1c\win32" -lmtipli’
#
# (vsim-50) A call to system(C:\modeltech_10.1c\gcc-4.2.1-mingw32vc9\bin\gcc.exe -shared -o “C:\cygwin\tmp\abdoo@ABDOO-PC_dpi_7916\win32_gcc-4.9.0\dpi_auto_compile.dll” C:/Users/abdoo/work_dpi\auto_compile@\win32_gcc-4.9.0*.o -L"C:\modeltech_10.1c\win32" -lmtipli) returned error code ‘1’.
#
# The logfile contains the following messages:
#
# gcc.exe: error: C:/Users/abdoo/work_dpi\auto_compile@\win32_gcc-4.9.0*.o: Invalid argument
#
#
# No such file or directory. (errno = ENOENT)
#
#
#
# FATAL ERROR while loading design
# Error loading design
Error loading design