Mark,
I have a DynaZip error message "Nothing to do"..., how can I avoid this?

>That message is from DynaZip and is telling you that you either have no files to add to a zip file,

Yes, this is my situation, because I use DeleteOriginal option (I've modified your class a little, added new properties, etc.)

no filespec to zip or unzip, the function you selected changes nothing [e.g., you are doing a zip refresh but all zipped files are current], etc. This could be just about any combination of the above as well.

Yes, I definetely understand that it means, I meant how can I avoid "native DynaZip error messages" for this situation and use my own Error Messages?

>Try modifying the sample code I gave you. If it was to unzip a file, change the name of the zip file name to a zip file you have. Also change the destination to unzip to. You can make the filespec *.* as well.

Yes, I used your sample code with my modifications. I created Extract and Archive programs based on your sample.