"Clean" repacks may pre-register the required .dll files, saving you from manual command-line registration .
Highly compressed installers are faster to download on slow connections. Safety and Security Risks ActiveX and the Component Object Model - NI
As an "ActiveX EXE," it acts as a standalone COM server that runs in its own process space to handle specialized tasks like video decoding or cross-process communication. Why Users Search for a "Repack"