Are you compiling for 64 bit or Any CPU?

>As per listed, I have in the Program Files:
>
>Microsoft .NET Framework 4 Multi-Targeting Pack
>Microsoft .NET Framework 4.5
>Microsoft .NET Framework 4.5 Multi-Targeting Pack
>Microsoft .NET Framework 4.5 SDK
>
>This seems to indicate that the runtime 4.5 is installed. And, this is the latest vesrion: 4.5.50709. Is there another 4.5 related item I need to download to benefit of the runtime or this is it?
>
>VS 2012 did the job to install the 4.5 related items. But, it seems it removed the 4.0 runtime. The registry HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4.0\Client indicates that Version is 4.0.0.0. So, it is trying to run the runtime of 4.0.0.0. If VS 2012 removed that runtime, that might explain why I have this situation.
>
>Now, the question is why do I have this situation? VS 2012 installation should have done everything accordingly to what it needs to run an application. Next, would be to know what I should do to resolve the issue.