Thank you for your post.
The updater first checks the local drive for the application. If not found, then the updater checks any attached and mounted network drives. This is as designed.
Prior to running the updater, unmount any network drives where the application does not exist. This will help speed up the time.
Thank you for your reply. That makes sense. Unfortunately, Xsan automatically mounts fibre channel volumes, so unmounting drives is not an option. It took around 40 minutes, but the updater was finally able to install. The update is great, though, and worth the installation hassle.