Even with ridiculously high wirm values, I get the error. This is from a 2nd box I am trying to use that is physical with 32 GB RAM.
MaxProcessesPerShell = 500
MaxMemoryPerShellMB = 12288
MaxShellsPerUser = 500
I even tried on a Windows Server 2012 box and have the same issue. I also installed CopSSH on the Win2k8 box, tested and configured that, added it as a Powershell connection. It works but returns null or an error when testing with the sample Powershell workflows. Using a very basic Powershell script, it works fine on a WinRM HTTP session but returns null for the SSH connection. I still have no way of running a PS1 that includes connect-viserver when PowerShell v3.0 is on the box.