I tried changing the existing directory, queueing the update, then copy/pasting the contents back into the original location but it still errors out. Is this a known issue? How can I update this engine without reinstalling it?
This is easy to fix.
The folder you try to install to have 1 or more files inside, you need to delete them or create a new folder, and don’t cancel it. If you cancel an installing or update will the folder keep the files that was downloaded.