Clarifying question:
(1) Were the installation files (tse.dat, tse.exe) also on the network drive, or were the installation files on a local hard drive like C: ?
(2) Does the network share create a virtual or mirror directory on your local system?
This happened to me a few years ago at my former employer. The real network share was in London but I was in the U.S. To make things more efficient, a mirror of that share was created on my local drive and assigned the drive letter H (for "home drive"). This was years ago. Occasionally with certain programs, I would run into file-not-found errors because the syncing was not always reliable or known. Maybe I just didn't understand how the sync was supposed to work. Eventually, I learned the difference between the actual home drive and my local mirror, and how to address each one independently. I seem to remember that when I right-clicked on the H: drive in Windows Explorer (now called File Manager), it gave me the option of whether to address the local mirror or the actual shared, or how to control the syncing.
I have not run into that situation for a few years, but your post helps me remember how it was.
Eric Pement