[Urgent] Please help me out - Invalid user name or password on Guest Ubuntu

Hi,

Ater searching on Google for 1 week, I have finally came here. please help me out.

I have Windows 7 host OS and Ubuntu 11.04 for the Guest OS on running VMWare Workstation 6.5

I have any problem to run Power command such as "start" "stop" "reset"

c:\>vmrun -T ws reset "./Ubuntu.wmx"

HOWEVER,

Whenever I trying to run a command without ID/Password, it returns "Invalid user name or password for the Guest OS" even though YES it is correct ID/PASSWD for the Guest Ubuntu OS.

c:>vmrun -T ws -gu tshpark -gp 2001 runProgramInGuest "./Ubuntu.vmx" /usr/bin/xclock

Error: Invalid user name or password for the guest OS

Also tried,

c:>vmrun -T ws -gu "tshpark" -gp "2001" runProgramInGuest "./Ubuntu.vmx" /usr/bin/xclock

Error: Invalid user name or password for the guest OS

Please help me out how to troubleshoot this problem?

Thanks in advance,

Thomas