Starting up a VM with java

I've been trying to write Java code to startup and login to a Windows Server 2003 VM. However, it doesnt quite seem to work. I'm using the VIX DLL, and using JNA calls to directly invoke the C API methods.

Here is my sample code:

-

            jobHandle = instance.VixHost_Connect(VIX_API_VERSION, VIX_SERVICEPROVIDER_VMWARE_WORKSTATION,

                    "127.0.0.1" , 0, null, null, 0, VIX_INVALID_HANDLE, null, null);

            long result = instance.VixJob_Wait(jobHandle, VIX_PROPERTY_JOB_RESULT_HANDLE, new int[1], VIX_PROPERTY_NONE);

            if (result != VIX_OK) {

                System.out.println("Error in connecting " + result);

            }

            instance.Vix_ReleaseHandle(jobHandle);

            // Open VM

            jobHandle = instance.VixVM_Open(hostHandle[0], vmxPath, null, null);

            result = instance.VixJob_Wait(jobHandle, VIX_PROPERTY_JOB_RESULT_HANDLE, new int[1], VIX_PROPERTY_NONE);

            if (result != VIX_OK) {

                System.out.println("Error in opening VM: " + result);

            }

            instance.Vix_ReleaseHandle(jobHandle);

            // Power On VM

            jobHandle = instance.VixVM_PowerOn(vmHandle[0], VIX_VMPOWEROP_LAUNCH_GUI, VIX_INVALID_HANDLE, null, null);

            result = instance.VixJob_Wait(jobHandle, VIX_PROPERTY_NONE, new int[1], VIX_PROPERTY_NONE);

            if (result != VIX_OK) {

                System.out.println("Error in powering VM on: " + result);

            }

            instance.Vix_ReleaseHandle(jobHandle);

            jobHandle = instance.VixVM_LoginInGuest(loginHandle[0], "Administrator", "Password", vmxPath, null, null);

            result = instance.VixJob_Wait(jobHandle, VIX_PROPERTY_NONE, new int[1], VIX_PROPERTY_NONE);

            if (result != VIX_OK) {

                System.out.println("Error in logging in: " + result);

            }

            instance.Vix_ReleaseHandle(jobHandle);

-

Any java developers out there who might be able to help me figure out why this isnt working right ?

I'm using the VIX sample code as reference. ( http://www.vmware.com/support/developer/vix-api/vix18_reference/lang/c/functions/VixVM_LoginInGuest.html  under Examples)

The line marked in BOLD in code, is returning result as 3, instead of VIX_OK (i.e. 0) as expected. VM doesnt even open.

Help would be appreciated.