So I just rebooted and tried again. Same issue and this is the Event viewer message that comes up at the same time the installer fails. I'm pretty sure this is the issue:
Event 7000, Service Control Manager
The Vstor2 Update Manager Virtual Storage Driver service failed to start due to the following error:
Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.