We just released WatchDirectory v4.8.8, this new release has the following issues solved:

* The ZIP files task could not properly create ZIP files containing large (> 4 GB) files.
* The FTP files task sometimes ignored the text/binary setting after a reconnect to the FTP server.

This is a free upgrade for all customers, download the new release here:
http://www.watchdirectory.net/download.html

Stop all your tasks and install this new release "on top" of your current version so it will keep all your tasks and settings.