Installation of the .NET2 POA package on a Windows host fails with the following error message:
Registry key "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v2.0.50727" does not exist
The "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft.NETFramework\v2.0.50727" registry rey because the .NET Framework 2.0 is not installed on the target Windows host.
Install the .NET Framework 2.0 on the Windows host in question and make sure that the registry key is present on the host.
Refer to the Microsoft Knowledgebase article http://support.microsoft.com/kb/908077 for instructions.