PowerOn fails with 3008-Cannot connect to the virtual machine

Hello,

I am using VIX1.11 to start a VM(XPSP2 32bit) on ESXi5 server.I call PowerOn() method, this method return error 3008-Cannot connect to the virtual machine but the VM still started.

Beside that, I am using vSphere client5 to start VM and open console, this work well.

Could you please help me get it working?

Thanks

Trung Nguyen.