We are using the Dynazip Max 5 ActiveX controls. I updated it a year or two ago. One thing you might consider; the Zip format is a standard. Another Zip program should be able to read the files. Take a look at http://www.sweetpotatosoftware.com/spsblog/
and click on a link 'VISUAL FOXPRO' in that page do a search for ZIP and follow the links for more info. You will find the VFP Compresson FLL download link. I have not used it but it's worth looking at. Craig Boyd creates great software. I'm using his encryption FLL.
John.

>I think you must be using the commercial dynaZip OCX or something newer than the one my client has? I do not have the returncount property in the object I am using.
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>I think I need to dig deeeper on this end and see where this object comes from..
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>Whet we are using is initialized as..
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>loZip = Createobject("dzactxctrl.dzactxctrl.1")
>