Stephen,
I am sorry you ran into this issue. I understand that the installer tries to go online and get few bits and pieces, at this point you can see pulse trying to download. The workaround is, once you have the all in one installer, take your computer offline, meaning remove internet access and do the install. This way, it will prevent pulse trying to download stuff over the internet, which in turn will result in a faster install.
Genuitec has also added few more load balancers, so I hope that you won’t be seeing any more failsafe.poweredbypulse.com errors. Sorry for the inconvinience caused. We are going to take care of these issues in our future releases.