ARM Cortex-A9 MPCore check stack usage

Hi experts,

I want to check the actual usage of my program on Xilinx SDK 2015.4.

I connected to ARM Cortex-A9 MPCore#0 using the connect command in XMD console as shown below:

When I used stackcheck command, there was an error saying that no ELF associated with target:

Then I checked that the stackcheck command works on the most recently downloaded elf file. 

So I tried to download the ELF file using the dow command in XMD console, but it did not work. And the ELF file for my program is MyApp.elf shown below:

Does anyone know how to solve the download issue?

Or is there a better way to check the actual stack usage?

Thanks,

LJ