compile_simlib -language all -dir {C:/Sim Libs} -simulator modelsim -simulator_exec_path {C:/tools/questa/10.3b_64/win64} -library all -family all
ERROR: [Vivado 12-3591] compile_simlib failed to compile for modelsim with 5 errors.
BEGIN_COMPILATION_MESSAGES(modelsim:vhdl:unisim)
** Error: (vcom-7) Failed to open -f file "C:\Sim" in read mode.
No such file or directory. (errno = ENOENT)
End time: 11:48:57 on Oct 08,2014, Elapsed time: 0:00:00
Errors: 1, Warnings: 0