I am using ESXi 5.0, I have vsphere 5.0 installed as well. I have my VM created. When I go into edit settings, I am receiving this error message.
"An internal error occurred in the vsphere client.
Details: The type initializer for 'vpxclient.vmconfig.cpuid' threw an exception.
Contact VMware support if necessary.
This is a known issue affecting VMware vCenter Server 5.0, 5.0 Update 1, and VMware vCenter Server 5.1. This issue is resolved in vSphere vCenter Server 5.1 Update 1 and Client 5.0 Update 2
It is recommended that you also install the updated VMware vSphere Client when upgrading vCenter Server.
To work around this issue, perform one of these options: