The latest version of pkunzip can be downloaded from various archive sites. Version 5.0b of WinZip is also known to work and is highly recomended for Windows users. See the documentation provided with these packages for details of how to install and use them. That way you will get notification of all the updates, bug fixes etc. Y2K Version 1.8C is Y2K ready.
All previous versions have a bug in the date comparison and sorting routines.
All we ask is that you give it a try and let us know what you think. Support CMMP is supported via. email. U.S. users need to send mail off by mid-morning to have any chance of a response that day. Once you are a registered user, you will get notification of all the updates sent to you, and also email notification of any serious bugs which are discovered. Although at the time of writing, development of CMMP has been a very background activity for some time, the program is in regular use by the author.