How is the Windows System Directory affected by SETUP?

Without version checking, SETUP installs VPE and all related files in the target directory you specify. With version checking, all DLL's - except the .NET component DLL - and the ActiveX are additionally copied to the Windows System32 directory (on 64-bit Vista / Windows 7 / 8 / 8.1 / 2012 and higher: \windows\SysWOW64). Version checking means: SETUP does not overwrite files, which have higher version numbers in their version information resource.