For experience of other software a few virus detection systems can make installation of new software very slow or almost impossible. Have you tried to install with the virus detection software turned off?
If you try this:
1. Down load the HW installer from the Hauptwerk site (hauptwerk.com). Make certain this is where the software is coming from. Your system should scan the install package as a part of the download - if not scan the installer manually.
2. Disconnect from the internet (turn off the wifi and or unplug any wired connection)
3. Temporarily disable/turn off the virus detection system
4. Try the installation again
I think it should complete within 20 minutes!
Before you connect to the Internet again turn on your virus detection software!
Good luck.
Iain