Two machines. Both with .NET 3.5 and the VS 2008 VC++ SP1 redistributables
A single exe which uses two signed DLLs, one in C++/CLI and one in C#
The exe load
Open the command prompt as administrator and enter following commands:
reg DELETE "HKLM\Software\Microsoft\StrongName\Verification" /f
reg ADD "HKLM\Software\Microsoft\StrongName\Verification\*,*" /f
reg DELETE "HKLM\Software\Wow6432Node\Microsoft\StrongName\Verification" /f
reg ADD "HKLM\Software\Wow6432Node\Microsoft\StrongName\Verification\*,*" /f