copyFileFromGuestToHost got Error: Unknown Error

Hi,

I issued the following command to copy a file from vm to host:

vmrun.exe" -T esx -h https://host/sdk -u user -p password -gu guser -gp gpassword copyFileFromGuestToHost "\[storage1\] CentOs-5.3-x86-64/CentOs-5.3-x86-64.vmx" "/etc/sysconfig/network-scripts/ifcfg-eth0" "/user/ifcfg-eth0"

Error: Unknown error

Can someone help me ?