The main reason that you will see freezing of the FDM process while processing the zip file is because WinZip is working in an evaluation mode. The best way to confirm is to try and run the command line tool in WinZip and see if you receive an evaluation message like the one below.
C:\Users\Administrator\Desktop>wzzip -a joe.zip *.ddl
WinZip(R) Command Line Support Add-On Version 4.0 64-bit (Build 10562)
Copyright (c) 1991-2013 WinZip International LLC - All Rights Reserved
THANK YOU FOR TRYING WINZIP COMMAND LINE ADD-ON
This is a fully functional version for EVALUATION USE ONLY
This notice is not displayed with registered Standard and Pro editions of
Please go to www.winzip.com to order WinZip.
(press any key to continue (Ctrl-C to quit))
If you do, you will need to make sure WinZip is running a registered copy, since WinZip will not run in a batch mode in evaluation mode. For more information on how to register WinZip, please consult their site at www.winzip.com.