Hello, I'm using TZipMaster from a thread. My problem is that the created ZIP file is not compressed regardless what I use for AddCompLevel. I use DLL v1.79 Here is my thread body: zm := TZipMaster.Create(NIL); zm.OnMessage := ZipMessage; zm.OnProgress := ZipProgress; zm.OnCheckTerminate := ZipCheckTerminate; zm.NotMainThread := TRUE; zm.Unattended := TRUE; zm.AddOptions := [AddHiddenFiles, AddDirNames]; zm.AddCompLevel := 9; zm.ZipFileName := dstPath + dstID; zm.FSpecArgs.Assign(Sources); zm.Dll_Load := TRUE; if (zm.Dll_Load = TRUE) then theResult := zm.Add(); zm.Free(); Thanks ----------- To unsubscribe from this list, send an empty e-mail message to: delphizip-request@xxxxxxxxxxxxx and put the word unsubscribe in the subject.