So for arguments sake can you code for an application to operate in both 32 and 64 bit environments? One application that can be loaded on either 32 or 64 bit. Much like loading 64 bit Windows and using 32 bit Office.
I dabbled with the process a while back with Office 2010 and 2013 both 32 and 64. I was able to upgrade the application to use 64 bit but when it was loaded on a machine that had 32 bit office it wouldn't work. I suspected it wouldn't because it didn't have the 64 bit libraries. But could you include the libraries as part of a runtime so it could work on either 32 or 64 bit?