Each time I use WINBOX there is a small text file that is generated and placed on my desktop. This happens on each computer I use for WINBOX.
WINBOX Version on each box.....6.48.1

Is there some setting to stop this?

You must have the exe file located on your desktop. Try moving it somewhere else and adding a shortcut to the desktop instead.

OK I'll try that but it has been working just fine until the last update.

Nope...That didn't work.