Modelsim Altera and Quartus II Web Edition Error

Hi

I am also getting the same error with ModelSim SE 6.4. when I am trying to run from .do file its giving the following error.

# ** Error: (vcom-7) Failed to open design unit file "F:/code/aes/pack.vhd" in read mode.

# No such file or directory. (errno = ENOENT)

# ** Error: C:/modeltech_6.4/win32/vcom failed.

But I am able to compile the same file by direct loading. Whatever do file I use was working fine for ModelSim 5.4E.

Any suggestions will be appreciable.

Thanks In Advance

Prakash Kumar.T