Thanks for all the welcomes.
Tweezer, I'll give that a shot.
I was using SmartFTP to copy and over-write all the new files (FTP-ing from the uncompressed upgrade file on my computer, to my MT dir on the TCH server), but it's hard to tell if it works fully, and I couldn't find the actual command in SmartFTP, so I just did a drag and drop.
Is there a simple way, through the C-Panel or FTP to uncompress the upgrade file and have it copy and replace all the new files and nested directories that it needs to (preferably all at the same time?)?
Thanks again.