It looks as if the ESXi node ESXHOST02 can not be found.
Does this return anything?
Get-VMHost -Name ESXHOST02Blog: http://lucd.info | Twitter: @LucD22 | PowerCLI Reference co-author: http://tinyurl.com/hkn4glz
You pointed me in the right direction, thanks. The output of "Get-VMHost" showed that the ESX servers name have the DNS FQDN attached so I had to address the ESX server as ESXHOST02.domain.local for example.