When I try to install the latest Quest I get the following message: "The drive or UNC share you selected does not exist or is not accessible. Please select another." But I was never given a choice of hard drive - just on whether or not I wanted a desktop shortcut. I've tried asking for a shortcut / asking for no shortcut. And I've tried installing on different hard drives. Is there anything else I can try?

It's Quest 5.8.0

Okay, looks like there were remnant files from an older install that it was throwing it off - even on hard drives that didn't have one. All fixed now.